WEBVTT

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<v Speaker 1>Welcome to Bedtime Astronomy. Explore the wonders of the cosmos

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<v Speaker 1>with our soothing Bedtime Astronomie podcast. Each episode offers a

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<v Speaker 1>gentle journey through the stars, planets, and beyond, perfect for

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<v Speaker 1>unwinding after a long day. Let's travel through the mysteries

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<v Speaker 1>of the universe as you drift off into a peaceful

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<v Speaker 1>slumber under the night sky.

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<v Speaker 2>I want you to imagine, just for a second, that

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<v Speaker 2>you are packing for a road trip. Okay, but like

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<v Speaker 2>if you're listening to this on your commute right now,

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<v Speaker 2>think about this not as a quick weekend getaway. Think

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<v Speaker 2>about it as a three year, completely unbroken journey. Right

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<v Speaker 2>A long haul, a really long haul. And here's the catch.

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<v Speaker 2>You cannot stop for gas, no pit stops, none, You

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<v Speaker 2>cannot pull over for a snack. There are no convenience stores,

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<v Speaker 2>no rest stops, no hospitals anywhere, and absolutely no breathable

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<v Speaker 2>air outside of your vehicle.

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<v Speaker 3>Which is a pretty big detail to deal with.

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<v Speaker 2>Exactly, you have to bring every single ounce of water

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<v Speaker 2>you will ever drink, every crumb of food you will

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<v Speaker 2>ever eat, and literally every breath of oxygen you will

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<v Speaker 2>need for those entire three years and all of that

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<v Speaker 2>has to be packed into a pressurized space roughly the

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<v Speaker 2>size of well a standard RV.

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<v Speaker 1>Right.

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<v Speaker 2>Oh, and outside that RV, the universe is constantly actively

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<v Speaker 2>trying to kill you with high energy radiation.

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<v Speaker 3>It is a terrifying, I mean almost paralyzing logistical nightmare

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<v Speaker 3>when you frame it.

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<v Speaker 2>Exactly like it really is.

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<v Speaker 3>But that is the unvarnished reality of getting human beings

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<v Speaker 3>to Mars. We're talking about operating in an environment that

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<v Speaker 3>is actively and inherently hostile to biology.

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<v Speaker 2>Hostile is almost an understatement, right.

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<v Speaker 3>The sheer volume of mass required just to keep primate

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<v Speaker 3>biology functioning, and I mean forget thriving and just been surviving,

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<v Speaker 3>keeping a pulse exactly, just surviving for that duration is staggering.

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<v Speaker 2>Okay, let's unpack this because that timeline, that multi year

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<v Speaker 2>just ruling odyssey has always been the ultimate bottleneck for

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<v Speaker 2>planetary exploration. Oh. Absolutely, everything comes down to time. But

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<v Speaker 2>we are looking at a monumental breakthrough in orbital mechanics today,

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<v Speaker 2>something that really emerged back in April twenty twenty six,

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<v Speaker 2>right from marcelod Oliver SUSA, Yes, spearheaded by his research

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<v Speaker 2>at the State University of northern Rio du Janiro. We

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<v Speaker 2>are talking about a newly discovered interplanetary shortcut, a fast lane,

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<v Speaker 2>a literal fast lane through the Solar System that could

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<v Speaker 2>slash the travel time to Mars from this you know,

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<v Speaker 2>multi year endurance test into a manageable, highly efficient expedition.

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<v Speaker 3>And what's fascinating here is that this isn't some theoretical

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<v Speaker 3>Alcubier warp drive or you know, some speculative science fiction

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<v Speaker 3>concept relying on exotic matter.

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<v Speaker 2>Right, We're not talking about star trek.

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<v Speaker 3>No. No, this is a profound reimagining of the Solar

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<v Speaker 3>System's orbital dynamics, grounded entirely in the Newtonian physics we

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<v Speaker 3>already know. The physics we already use is already there.

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<v Speaker 3>It is. It's about utilizing the gravitational architecture that is

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<v Speaker 3>already out there in a completely novel way, basically to

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<v Speaker 3>solve a problem we've essentially been throwing brute engineering force

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<v Speaker 3>at for the last half century.

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<v Speaker 2>And by the end of this conversation you are going

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<v Speaker 2>to understand exactly how a seemingly random, completely unassuming near

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<v Speaker 2>Earth asteroid holds the mathematical key to humanity's future as

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<v Speaker 2>a multiplanetary species.

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<v Speaker 3>It's pretty incredible.

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<v Speaker 2>It is a wild ride. But before we get to

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<v Speaker 2>the shortcut, we really need to understand the traffic jam

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<v Speaker 2>right the baseline. Yeah, we need to talk about what

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<v Speaker 2>I like to call the tyranny of the commute, Because

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<v Speaker 2>if you're someone who follows aerospace, you hear about a

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<v Speaker 2>trip to Mars taking two to three years, and you

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<v Speaker 2>might wonder, well, if we can send a probe to

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<v Speaker 2>the Moon in three days, why is Mars taking years?

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<v Speaker 3>That's the big question. To understand the delay, we really

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<v Speaker 3>have to look at the foundational math of spaceflight.

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<v Speaker 2>Okay.

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<v Speaker 3>For decades, space agencies have relied entirely on something called

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<v Speaker 3>Homan transfer orbits right, formulated way back in nineteen twenty

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<v Speaker 3>five by Walter Holman, and it has remained the undisputed

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<v Speaker 3>gold standard for interplanetary travel, primarily because it is the

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<v Speaker 3>absolute most fuel efficient way to move mass from one

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<v Speaker 3>orbit to another.

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<v Speaker 2>But efficient does not mean fast, not at all. Those

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<v Speaker 2>two things are usually like diametrically opposed in physics.

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<v Speaker 3>Quite the opposite of fast. Actually, a Homan transfer is

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<v Speaker 3>essentially a long, slow half Ellips trajectory.

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<v Speaker 2>Okay, paint picture for us well.

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<v Speaker 3>You have to remember planets are not sitting still in

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<v Speaker 3>a vacuum. They are hurtling around the Sun at tens

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<v Speaker 3>of thousands of miles an hour. Earth is moving it

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<v Speaker 3>about thirty kilometers per second. Mars is moving it about

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<v Speaker 3>twenty four kilometers per second on a wider track. You

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<v Speaker 3>can't just point your rocket at Mars and fire the

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<v Speaker 3>engines in a straight line.

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<v Speaker 2>Right, because if you try to drive straight across a

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<v Speaker 2>spinning merry go round the centrifugal force and like the

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<v Speaker 2>angular momentum, completely throw you off your path exactly. You're

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<v Speaker 2>fighting the fundamental rotation of the entire system.

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<v Speaker 3>That is an excellent way to visualize. Instead of driving

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<v Speaker 3>straight across the merry, ground a home and transfer as

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<v Speaker 3>you apply a precise burst of thrust in the exact

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<v Speaker 3>direction Earth is already moving.

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<v Speaker 2>So you're writing the momentum you already have precisely.

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<v Speaker 3>You add just enough energy to stretch your orbit out

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<v Speaker 3>into an ellipse, and then your spacecraft just coasts unpowered

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<v Speaker 3>for millions of miles, drifting, trading kinetic energy for potential

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<v Speaker 3>energy as it sort of climbs out of the Sun's gravity. Well, okay,

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<v Speaker 3>and if you calculate the orbital speeds and planetary positions perfectly.

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<v Speaker 3>Your spacecraft reaches the outermost edge of that ellipse at

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<v Speaker 3>the exact moment Mars happens to be rolling through that

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<v Speaker 3>specific point in space.

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<v Speaker 2>Okay, so you are coasting, and because you are relying

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<v Speaker 2>almost entirely on that single initial push and then just

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<v Speaker 2>letting the Sun's gravity dictate your speed the rest of

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<v Speaker 2>the way, it is agonizingly slow, very slow. We are

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<v Speaker 2>talking about a one way trip taking anywhere from six

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<v Speaker 2>to nine months, depending on the specific planetary alignment. Right,

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<v Speaker 2>but wait, hold on, If it's six to nine month there,

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<v Speaker 2>that still doesn't add up to the three year road

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<v Speaker 2>trip I mentioned at the beginning.

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<v Speaker 3>No it doesn't.

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<v Speaker 2>I mean even if you turn around and come right back,

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<v Speaker 2>that's only a year and a half. Where does the

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<v Speaker 2>rest of the time come from.

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<v Speaker 3>This is the crucial detail regarding sonotic periods that often

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<v Speaker 3>gets completely glossed over in pop science. Oh really Yeah,

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<v Speaker 3>when you arrive at Mars after that nine month journey,

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<v Speaker 3>you cannot just turn the ship around, fire the engines,

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<v Speaker 3>and coast back down to.

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<v Speaker 2>Earth because Earth isn't there anymore.

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<v Speaker 3>Exactly, Earth is on a tighter, faster inner track. By

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<v Speaker 3>the time you reach Mars, Earth has basically lapped you.

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<v Speaker 3>It is continued along its orbit and is practically on

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<v Speaker 3>the other side of the Sun. So the geometry for

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<v Speaker 3>a return home and transfer simply does not exist at

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<v Speaker 3>that moment.

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<v Speaker 2>So you're just stuck.

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<v Speaker 3>You're fundamentally stuck. You have to wait on the Martian's

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<v Speaker 3>surface or in Mars orbit for the two planets to

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<v Speaker 3>realign favorably so you can initiate return sequence.

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<v Speaker 2>And how long is that wait?

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<v Speaker 3>That waiting period the surface day time is typically about

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<v Speaker 3>five hundred days five hundred days a year and a half.

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<v Speaker 3>You spend a year and a half sitting on a freezing,

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<v Speaker 3>irradiated desert just waiting for the planetary geometry to grant

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<v Speaker 3>you permission to come home.

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<v Speaker 2>That's insane.

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<v Speaker 3>And then you have another six to nine months of

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<v Speaker 3>travel back to Earth. Add it all up and you

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<v Speaker 3>are locked into a twenty four to thirty six month

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<v Speaker 3>minimum round trip.

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<v Speaker 2>I am struggling to see how anyone thought this was

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<v Speaker 2>a viable plan for a human crew.

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<v Speaker 3>It's definitely challenging.

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<v Speaker 2>It's like taking a cross country bus that only travels

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<v Speaker 2>at fifteen miles an hour just to save gas. And

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<v Speaker 2>then when you finally get to Los Angeles, the bus

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<v Speaker 2>company tells you the return highway doesn't open for a

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<v Speaker 2>year and a half.

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<v Speaker 3>That's a pretty fair analogy.

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<v Speaker 2>Actually, if the toll on the human body is this extreme,

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<v Speaker 2>how is a crude mission even justifiable under this old paradigm.

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<v Speaker 3>Well, that has been the central agonizing debate in bioastronautics

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<v Speaker 3>for thirty years. The physical and mental toll of a

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<v Speaker 3>three year mission is not just immense, it borders on prohibitive.

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<v Speaker 2>Let's break down the biology.

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<v Speaker 3>Okay, first, you have the radiation environment. Space beyond low

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<v Speaker 3>Earth orbit is completely saturated with galactic cosmic rays or GCRs.

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<v Speaker 2>GCRs.

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<v Speaker 3>Right, these are heavy, high energy atomic nuclei. They've been

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<v Speaker 3>stripped to their electrons, and they're blasting through space at

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<v Speaker 3>near light speed from distant supernovae.

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<v Speaker 2>And we aren't just talking about like a slightly higher

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<v Speaker 2>risk of getting a sunburn or needing to wear lead

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<v Speaker 2>vests at the dentist. No, No, we are talking about heavy

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<v Speaker 2>ions physically tearing through the hull of the spacecraft and

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<v Speaker 2>shattering the double helix of the astronauts' DNA.

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<v Speaker 3>It is severe cellular damage. When a heavy ion strikes

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<v Speaker 3>the human body, it causes complex DNA double s FRAN.

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<v Speaker 2>Breaks which our bodies can't fix.

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<v Speaker 3>Right, Yeah, our cellular machinery simply cannot repair them accurately,

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<v Speaker 3>which leads to drastically increased cancer risks and central nervous

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<v Speaker 3>system degradation.

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<v Speaker 2>That is brutal.

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<v Speaker 3>And that is just the ambient background radiation. Oh, yes,

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<v Speaker 3>you also have solar particle events. These are sudden, violent

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<v Speaker 3>flares from our own sun that can deliver lethal doses

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<v Speaker 3>of proton radiation in a matter of hours, lethal in

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<v Speaker 3>hours if the crew doesn't retreat to a heavily shielded

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<v Speaker 3>storm shelter.

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<v Speaker 2>Yes, and shielding against GCRs is notoriously difficult, right because

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<v Speaker 2>I read that if you just slap thick metal plates

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<v Speaker 2>on the ship, the heavy ions hit the metal and

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<v Speaker 2>shatter into secondary radiation. Yes, which is sometimes worse than

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<v Speaker 2>the primary ray. It's called spilation.

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<v Speaker 3>You're exactly right, spellation. Secondary radiation scattering is an absolute

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<v Speaker 3>nightmare for shielding designers.

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<v Speaker 2>I can imagine.

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<v Speaker 3>So radiation is your first massive hurdle. Then there is

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<v Speaker 3>the microgravity environment itself, because.

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<v Speaker 2>Floating around isn't as fun as it looks on TV.

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<v Speaker 3>Right. Even with aggressive, two hour a day resistive exercise regimens,

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<v Speaker 3>astronauts experience severe physiological deconditioning. Yeah, your body is incredibly adaptive.

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<v Speaker 3>Without the constant one g stress of earth gravity pulling

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<v Speaker 3>you down, your body assumes it no longer needs a heavy,

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<v Speaker 3>dense skeleton, which just gets rid of it exactly. Osteoclass

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<v Speaker 3>cells start breaking down your bone tissue faster than osceoblasts

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<v Speaker 3>can rebuild it.

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<v Speaker 2>You literally pee out your own skeleton.

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<v Speaker 3>That is the colloquial but highly accurate reality. Wow. Furthermore,

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<v Speaker 3>your heart, which is a powerful muscle designed to pump

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<v Speaker 3>blood vertically against gravity, suddenly doesn't have to work as hard,

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<v Speaker 3>so it begins to weaken and lose mass.

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<v Speaker 2>Okay, so weak bones, weak heart.

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<v Speaker 3>And fluids shift upwards into the upper body and head.

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<v Speaker 3>This leads to a condition called spaceflight associated neuro ocular

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<v Speaker 3>syndrome or sands.

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<v Speaker 2>Sands What does that do?

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<v Speaker 3>The elevated pressure of cerebrospinal fluid in the skull actually

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<v Speaker 3>flattens the back of the eyeball and swells the optic

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<v Speaker 3>nerve a. It physically degrades the astroant's vision, which is terrifying.

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<v Speaker 2>I mean, imagine arriving at Mars after nine months of

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<v Speaker 2>visual degradation, severe muscle atrophy, and a weakened heart. You

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<v Speaker 2>suddenly hit a gravity well, even if it's only thirty

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<v Speaker 2>eight percent of Earth's gravity, and you have to perform

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<v Speaker 2>highly complex, physically demanding operations right right away. If an

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<v Speaker 2>emergency happens on landing, your body is in its absolute

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<v Speaker 2>weakest possible state to respond.

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<v Speaker 3>And we haven't even touched the psychological strain yet.

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<v Speaker 2>Oh right. The isolation.

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<v Speaker 3>You are asking a crew to spend three years confined

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<v Speaker 3>in the metallic cylinder with the exact same three or

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<v Speaker 3>four individuals. Earth shrinks to a pale blue dot in

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<v Speaker 3>the window if it is visible at all, and.

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<v Speaker 2>You can't just call home for a quick chat.

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<v Speaker 3>No, due to the distance, the communication delay stretches up

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<v Speaker 3>to twenty two minutes one way twenty two minutes one way,

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<v Speaker 3>So if an alarm goes off and you ask mission

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<v Speaker 3>control for help, you are waiting a minimum of forty

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<v Speaker 3>four minutes just to hear them say we read you.

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<v Speaker 2>That is horrifying.

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<v Speaker 3>The extreme isolation and sensory deprivation presents psychiatric risks that

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<v Speaker 3>humans simply have not evolved to endure.

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<v Speaker 2>So we have severe radiation risk, physical degradation, and profound

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<v Speaker 2>psychological stress exactly. And to counter all of that, you

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<v Speaker 2>have to pack heavily, which brings us back to the

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<v Speaker 2>rocket equation, doesn't it.

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<v Speaker 3>The tyranny of the Siolkowsky rocket equation.

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<v Speaker 2>Right.

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<v Speaker 3>Because of these risks, you need robust, complex life support systems.

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<v Speaker 3>You need heavy radiation shielding, usually water or specialized polymers

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<v Speaker 3>which are heavy, very heavy. You need three years of food,

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<v Speaker 3>medical equipment, and spare parts. And every single kilogram of

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<v Speaker 3>that payload requires many kilograms of a protellon to push

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<v Speaker 3>it out of Earth's gravity.

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<v Speaker 2>Well, right, because you have to lift the fuel.

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<v Speaker 3>That lifts the fuel, which requires a larger fuel tank,

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<v Speaker 3>which adds more mass, which requires even more fuel. It

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<v Speaker 3>is an exponential curve of mass penalties.

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<v Speaker 2>It's a vicious cycle.

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<v Speaker 3>It is the logistical and financial burden makes these traditional

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<v Speaker 3>homean missions perilously close to unfeasible. This is why the

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<v Speaker 3>entire aerospace community has been desperate for a paradigm.

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<v Speaker 2>Shift, and that leads us to the cosmic blueprint. We

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<v Speaker 2>are finally moving away from the limitations of the grueling

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<v Speaker 2>scenic route and looking at the discovery of a hidden

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<v Speaker 2>fast lane.

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<v Speaker 3>Yes, the Suser research.

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<v Speaker 2>This is the research that genuinely blew my mind when

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<v Speaker 2>I read it. It hit the scientific community in April

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<v Speaker 2>twenty twenty six, and it centers entirely around a near

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<v Speaker 2>Earth asteroid. It does specifically asteroid two thousand and one

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<v Speaker 2>CAA twenty one.

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<v Speaker 3>Yes, the orbital data of two thousand and one CAA

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<v Speaker 3>twenty one is the foundational lynchpin of this entire mathematical discovery.

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<v Speaker 2>Okay, I need to stop and admit some genuine confusion here,

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<v Speaker 2>because I suspect you, the listener, might be wondering the

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<v Speaker 2>exact same thing I was when I first heard about this.

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<v Speaker 3>What's that?

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<v Speaker 2>My immediate logical assumption was, wait, so are we landing

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<v Speaker 2>on this asteroid? Are we firing grappling hooks and hitching

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<v Speaker 2>a ride on a space rock as it zooms past

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<v Speaker 2>Earth toward Mars?

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<v Speaker 3>Right?

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<v Speaker 2>A lot of people jump to that because that sounds

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<v Speaker 2>like a Bruce Willis movie, not an actual NASA mission profile.

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<v Speaker 3>It is a brilliantly cinematic image. I'll give you that. Yeah,

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<v Speaker 3>But No, we are definitely not hitching a ride on the.

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<v Speaker 2>Asteroid O good to clarify.

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<v Speaker 3>Not landing on it, and we are not necessarily using

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<v Speaker 3>it for a physical gravity assist.

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<v Speaker 2>Well, gravity assists like where you fly precariously close to

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<v Speaker 2>a massive body to steal some of its orbital momentum.

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<v Speaker 3>Exactly. While gravity assists are common for outer Solar System

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<v Speaker 3>probes like Voyager or Cassini, that is not what Marcella

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<v Speaker 3>del Versus's breakthrough entails.

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<v Speaker 2>So if we aren't landing on it, and we aren't

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<v Speaker 2>doing a slingshot maneuver around it, what on Earth is

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<v Speaker 2>this rock actually doing for us?

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<v Speaker 3>It is serving as a mathematical process rocks. Yes, SUSA

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<v Speaker 3>utilized the asteroid's precise orbital parameters is a screening tool

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<v Speaker 3>to map what are known as invariant manifolds.

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<v Speaker 2>Invariant manifolds, Okay, break that down for us.

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<v Speaker 3>Well, in the incredibly complex multidimensional mathematics of the Solar System,

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<v Speaker 3>plotting a fast, highly efficient route between two moving planets

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<v Speaker 3>while factoring in the gravitational pull of the Sun, Earth,

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<v Speaker 3>Mars and.

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<v Speaker 2>Everything else, that's a lot of math.

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<v Speaker 3>It is computationally overwhelming. It is known in physics as

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<v Speaker 3>the n body problem, and it is famously difficult to

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<v Speaker 3>solve cleanly because.

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<v Speaker 2>There's no fixed reference point right, everything is constantly pulling

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<v Speaker 2>on everything else at the same time.

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<v Speaker 3>Precisely, however, near Earth asteroids have been tumbling through our

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<v Speaker 3>Solar system for millions, sometimes billions of years over immense

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<v Speaker 3>pans of time. Gravity acts as a sort of evolutionary filter.

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<v Speaker 3>Asteroids with unstable orbits crash into planets or get ejected

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<v Speaker 3>into deep space.

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<v Speaker 2>They get weeded out.

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<v Speaker 3>Exactly. The ones that survive, like twenty one twenty one,

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<v Speaker 3>have naturally settled into dynamically stable, geometrically fascinating orbits.

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<v Speaker 2>Uh So, the universe has already done the supercomputer map

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<v Speaker 2>for us over the last billion years.

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<v Speaker 3>Exactly, they have naturally mapped out the low energy geometrical

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<v Speaker 3>grooves of the Solar system that is so cool. By

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<v Speaker 3>rigorously analyzing the eccentricity, meaning how elliptical the orbit is

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<v Speaker 3>and the inclination how tilted it is relative to the

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<v Speaker 3>Earth's orbital plane, Susa recognized something incredible.

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<v Speaker 2>What did he see?

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<v Speaker 3>He saw that two thousand one's trajectory isn't just a

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<v Speaker 3>random path. It perfectly outlines a hidden face based corridor.

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<v Speaker 2>A face based cord.

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<v Speaker 3>Yes, it represents a naturally stable, highly aligned pathway that

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<v Speaker 3>beautifully synchronizes with specific Earth Mars planetary oppositions.

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<v Speaker 2>Okay, let's make this tangible. A lot of people try

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<v Speaker 2>to explain this using a secret punnel in a video

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<v Speaker 2>game analogy. I've heard that one, Like you're walking around

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<v Speaker 2>taking the long way up a mountain and you see

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<v Speaker 2>an NPC just clip right through the geometry, revealing a

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<v Speaker 2>hidden tunnel. But that feels a bit too magical in

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<v Speaker 2>actual physics, how does an asteroid's orbit map a path

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<v Speaker 2>for a spacecraft?

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00:16:40.279 --> 00:16:43.279
<v Speaker 3>Let's use the concept of a river system instead. Okay,

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<v Speaker 3>the standard Homan transfer equations are hyper focused on finding

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<v Speaker 3>the absolute minimum energy required to traverse a completely flat, idealized.

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<v Speaker 2>Ocean like perfectly still water.

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<v Speaker 3>Right, But the Solar System isn't flat, and gravity creates

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<v Speaker 3>invisible currents. Susa's work demonstrated that if you take this

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<v Speaker 3>specif sacific orbital planes, velocities and intersection points of Earth

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<v Speaker 3>Mars and this intermediary asteroid, you expose gravitational currents that

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<v Speaker 3>standard calculation simply miss.

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<v Speaker 2>Because of the old math solving what engineers call Lambert's problem.

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<v Speaker 2>It forces the computer to assume a two body system,

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<v Speaker 2>right yes, and asks for a simple solitary arc. It

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<v Speaker 2>doesn't look for complex multilayered orbital resonance exactly.

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<v Speaker 3>Standard mission planners weren't looking for a path that mimics

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<v Speaker 3>and asteroids highly eccentric tilted orbit. Why not because conventional

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<v Speaker 3>wisdom always said that changing your inclination, meaning tilting your

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<v Speaker 3>orbit up or down relative to the solar plane, is

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<v Speaker 3>incredibly expensive in terms of fuel.

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<v Speaker 2>Oh, because you're fighting the momentum again, right.

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<v Speaker 3>But sus approved that the specific geometry of two thousand

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<v Speaker 3>and one C. Twenty one allows you to thread the needle.

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<v Speaker 3>It offers a dynamically favorable route that actually bypasses the

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<v Speaker 3>massive energy penalties you would normally face if you just

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<v Speaker 3>pointed your ship at Mars and they hit the throttle.

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<v Speaker 2>Okay, finding a new mathematical path is incredible in theory.

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<v Speaker 2>But if the universe doesn't give us anything for free,

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<v Speaker 2>how much time does this actually shave off?

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<v Speaker 3>That's the million dollar question.

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<v Speaker 2>Are we talking weeks or are we talking years? Because

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<v Speaker 2>if we are looking at the upcoming twenty thirty one window.

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<v Speaker 2>The numbers in this research are absolutely staggering.

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<v Speaker 3>The twenty thirty one window is a critical year for

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<v Speaker 3>orbital mechanics.

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<v Speaker 2>Let's talk about that well.

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<v Speaker 3>An opposition occurs when Earth passes directly between the Sun

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<v Speaker 3>and another outer planet, in this case Mars. Okay, Earth

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<v Speaker 3>and Mars are essentially lined up on the same side

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<v Speaker 3>of the Sun, bringing them to their closest physical approach.

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<v Speaker 2>But not all oppositions are created equal, right, Because Mars

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<v Speaker 2>has a pretty eccentric oval shaped orbit compared to Earth, that.

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<v Speaker 3>Is a vital distinction. Mars's orbit is highly elliptical. Sometimes,

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<v Speaker 3>when Earth catches up to Mars, Mars is at its

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<v Speaker 3>farthest point from the fun called aphelion.

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<v Speaker 2>So they're still pretty far apart.

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<v Speaker 3>Right, Those are unfavorable oppositions, But roughly every fifteen to

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<v Speaker 3>seventeen years, Earth catches up to Mars when Mars is

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<v Speaker 3>at its closest point to the Sun, its perihelion.

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<v Speaker 2>Ah.

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<v Speaker 3>The twenty thirty one opposition is one of these parahelic

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<v Speaker 3>highly favorable alignments. The gap between the two planets shrinks dramatically.

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<v Speaker 2>And when Susan mapped his asteroid derived corridors onto the

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<v Speaker 2>specific planetary positions of the twenty thirty one window. He

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<v Speaker 2>identified two primary mission architectures, right, He did two different

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<v Speaker 2>ways to exploit this gravitational current. And here is where

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<v Speaker 2>the math just totally rewrites the textbook. Let's remember the

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00:19:30.519 --> 00:19:34.000
<v Speaker 2>old baseline two to three years for a full round

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<v Speaker 2>trip with five hundred days stuck on the surface. Exrect

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<v Speaker 2>what does configuration A give us.

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00:19:39.519 --> 00:19:43.759
<v Speaker 3>Configuration A outlines a complete closed loop round trip mission,

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00:19:43.839 --> 00:19:47.960
<v Speaker 3>meaning meaning departure from Earth, transit, a surface stay on Mars,

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00:19:48.480 --> 00:19:51.000
<v Speaker 3>and the full return flight back to Earth in exactly

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<v Speaker 3>two hundred and twenty six days.

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00:19:52.480 --> 00:19:54.599
<v Speaker 2>Two hundred and twenty six days. We are talking about

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00:19:54.640 --> 00:19:57.119
<v Speaker 2>condensing a one thousand day mission into about seven and

405
00:19:57.119 --> 00:19:58.960
<v Speaker 2>a half months. That alone is revolutionary.

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00:19:59.000 --> 00:19:59.759
<v Speaker 3>He cages everything.

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00:20:00.039 --> 00:20:02.319
<v Speaker 2>Configuration B is what genuinely made me stop reading and

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<v Speaker 2>just stare at.

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00:20:02.880 --> 00:20:04.480
<v Speaker 3>The page ah Configuration B.

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<v Speaker 2>Configuration B is the extreme rapid round trip setup, the

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00:20:08.960 --> 00:20:11.640
<v Speaker 2>absolute high speed express lane. Tell us the number.

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00:20:11.759 --> 00:20:14.839
<v Speaker 3>Configuration B clocks in at a total round trip duration

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<v Speaker 3>of just one hundred and fifty three days.

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<v Speaker 2>One hundred and fifty three days, that is roughly five months.

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00:20:19.759 --> 00:20:22.640
<v Speaker 2>It is the old Holman standard was six to nine

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<v Speaker 2>months just to travel one way. Now we're talking about

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<v Speaker 2>leaving Earth, arriving at Mars, conducting a short stay orbital

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00:20:30.319 --> 00:20:33.880
<v Speaker 2>or surface mission, and returning to Earth, all in less

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<v Speaker 2>time than it used to take just to arrive.

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<v Speaker 3>It fundamentally obliterates the existing paradigm of interplanetary bioastronautics.

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00:20:40.839 --> 00:20:42.559
<v Speaker 2>It's hard to even wrap your head around.

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00:20:42.640 --> 00:20:45.240
<v Speaker 3>When we analyze this opposition window through the lens of

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<v Speaker 3>Susan's corridors, we realize we aren't bound by the five

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<v Speaker 3>hundred day surface weight.

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<v Speaker 2>Right the waiting room is closed exactly.

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00:20:51.960 --> 00:20:55.519
<v Speaker 3>The specific geometrical alignment mapped by the asteroid allows for

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00:20:55.559 --> 00:20:59.279
<v Speaker 3>a rapid return trajectory before the Earth moves completely out

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<v Speaker 3>of phase.

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00:21:00.200 --> 00:21:02.319
<v Speaker 2>But let me push back a little here. Sure, twenty

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<v Speaker 2>thirty one is a highly specific rare alignment. If this

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<v Speaker 2>only works once every fifteen years, is it really a

432
00:21:09.640 --> 00:21:12.440
<v Speaker 2>paradigm shift or just a really cool trick for one

433
00:21:12.480 --> 00:21:13.759
<v Speaker 2>specific launch window.

434
00:21:14.079 --> 00:21:17.279
<v Speaker 3>That is exactly the question the scientific peer review process ask,

435
00:21:17.480 --> 00:21:20.640
<v Speaker 3>and it's a valid point. While twenty thirty one is

436
00:21:20.640 --> 00:21:24.240
<v Speaker 3>the prime immediate target that maximizes the efficiency of this

437
00:21:24.519 --> 00:21:27.960
<v Speaker 3>specific one hundred and fifty three day transit. What is

438
00:21:28.039 --> 00:21:30.799
<v Speaker 3>truly groundbreaking is the mathematical proof of.

439
00:21:30.759 --> 00:21:32.640
<v Speaker 2>Concept, the underlying logic.

440
00:21:32.799 --> 00:21:37.240
<v Speaker 3>Yes Sousa proved that rapid non home and return transit

441
00:21:37.599 --> 00:21:42.880
<v Speaker 3>is mathematically viable without requiring Sci fi propulsion. The pathways

442
00:21:42.960 --> 00:21:44.079
<v Speaker 3>exist in the physics.

443
00:21:44.200 --> 00:21:46.559
<v Speaker 2>The door is unlocked. We just needed the asteroid to

444
00:21:46.559 --> 00:21:48.039
<v Speaker 2>show us the keyhole precisely.

445
00:21:48.400 --> 00:21:51.119
<v Speaker 3>If the map works for twenty thirty one, it validates

446
00:21:51.119 --> 00:21:54.319
<v Speaker 3>the methodology. We can apply this exact same screening tool

447
00:21:54.400 --> 00:21:57.759
<v Speaker 3>to other orbital periods, searching for different geometric corridors for

448
00:21:57.799 --> 00:21:58.880
<v Speaker 3>future launch windows.

449
00:21:59.039 --> 00:22:00.799
<v Speaker 2>So let's bring this down to Earth and talk about

450
00:22:00.799 --> 00:22:03.440
<v Speaker 2>the ripple effects. What does cutting a one thousand day

451
00:22:03.440 --> 00:22:05.519
<v Speaker 2>mission down two one hundred and fifty three days actually

452
00:22:05.559 --> 00:22:07.960
<v Speaker 2>mean for the engineers and the astronauts. Because the domino

453
00:22:08.000 --> 00:22:10.559
<v Speaker 2>effect here seems massive, it rewrites.

454
00:22:10.160 --> 00:22:13.599
<v Speaker 3>The entire medical risk profile of deep space exploration. Let's

455
00:22:13.640 --> 00:22:17.240
<v Speaker 3>revisit the radiation hazards. Okay, if your total exposure time

456
00:22:17.279 --> 00:22:20.359
<v Speaker 3>to the deep space galactic cosmic ray environment is reduced

457
00:22:20.359 --> 00:22:22.279
<v Speaker 3>from nearly two years down to just a couple of

458
00:22:22.279 --> 00:22:25.440
<v Speaker 3>months each way, your cumulative radiation dose plummets.

459
00:22:25.759 --> 00:22:29.000
<v Speaker 2>It brings it well below the career exposure limits set

460
00:22:29.000 --> 00:22:32.200
<v Speaker 2>by NASA, meaning you don't need to develop magical new

461
00:22:32.279 --> 00:22:34.960
<v Speaker 2>magnetic deflector shields to keep your astronauts alive.

462
00:22:35.160 --> 00:22:39.079
<v Speaker 3>Exactly current shielding technologies like high density polyethylene and water

463
00:22:39.200 --> 00:22:42.640
<v Speaker 3>jackets become perfectly adequate for one hundred and fifty three

464
00:22:42.720 --> 00:22:43.240
<v Speaker 3>day mission.

465
00:22:43.319 --> 00:22:44.519
<v Speaker 2>That's a huge relief.

466
00:22:44.880 --> 00:22:49.759
<v Speaker 3>Furthermore, the physiological deconditioning, the bone demineralization and muscle atrophy

467
00:22:50.160 --> 00:22:51.799
<v Speaker 3>is radically mitigated.

468
00:22:51.400 --> 00:22:53.519
<v Speaker 2>Because it's just a shorter time without gravity.

469
00:22:53.680 --> 00:22:57.200
<v Speaker 3>Yes, five months in microgravity is entirely comparable to a

470
00:22:57.279 --> 00:23:00.400
<v Speaker 3>standard expedition rotation on the International Space Station, and.

471
00:23:00.319 --> 00:23:02.640
<v Speaker 2>We know how to handle that. We have over two

472
00:23:02.799 --> 00:23:06.039
<v Speaker 2>decades of continuous human data on how the body degrades

473
00:23:06.079 --> 00:23:08.880
<v Speaker 2>over a six month period in LEO, and more importantly,

474
00:23:09.119 --> 00:23:10.960
<v Speaker 2>we know exactly how to rehabilitate it.

475
00:23:11.119 --> 00:23:15.200
<v Speaker 3>We have refined the exercise protocols and nutritional interventions perfectly

476
00:23:15.200 --> 00:23:19.839
<v Speaker 3>for that timeframe. So your crew arrives at Mars stronger, healthier,

477
00:23:20.279 --> 00:23:24.720
<v Speaker 3>with their cardiovascular systems intact and their vision unimpaired. They're

478
00:23:24.759 --> 00:23:28.480
<v Speaker 3>actually capable of stepping into a pressurized rover and performing

479
00:23:28.519 --> 00:23:30.400
<v Speaker 3>geologically demanding work.

480
00:23:30.440 --> 00:23:33.279
<v Speaker 2>Instead of spending their first month on Mars essentially acting

481
00:23:33.279 --> 00:23:36.559
<v Speaker 2>as medical patients doing physical therapy just to relearn how

482
00:23:36.559 --> 00:23:39.440
<v Speaker 2>to stand up in thirty eight percent gravity exactly, And

483
00:23:39.519 --> 00:23:43.480
<v Speaker 2>the psychological difference between a multi year endurance trial and

484
00:23:43.519 --> 00:23:46.519
<v Speaker 2>a five month rapid sortie cannot be overstated.

485
00:23:46.599 --> 00:23:47.319
<v Speaker 3>This night and day.

486
00:23:47.440 --> 00:23:51.599
<v Speaker 2>It transforms the psychology of the crew from survival mode

487
00:23:51.680 --> 00:23:56.519
<v Speaker 2>into an aggressive, focused, highly productive scientific expedition. You can

488
00:23:56.519 --> 00:23:58.599
<v Speaker 2>see the light at the end of the tunnel the moment.

489
00:23:58.319 --> 00:24:03.400
<v Speaker 3>You launch element is secured. But the engineering economics of

490
00:24:03.440 --> 00:24:07.480
<v Speaker 3>this are arguably even more profound. Really, how so well,

491
00:24:07.519 --> 00:24:11.039
<v Speaker 3>the entire mass architecture of the spacecraft changes. If your

492
00:24:11.039 --> 00:24:12.920
<v Speaker 3>mission is one hundred and fifty days instead of one

493
00:24:12.920 --> 00:24:15.839
<v Speaker 3>thousand days, you require a fraction of the consumables.

494
00:24:15.920 --> 00:24:18.799
<v Speaker 2>Right If you're only packing the RV for five months,

495
00:24:18.839 --> 00:24:23.119
<v Speaker 2>you need significantly less dehydrated food, less potable water, less

496
00:24:23.240 --> 00:24:26.200
<v Speaker 2>nitrogen for the atmosphere, and fewer backup medical kits.

497
00:24:26.359 --> 00:24:29.839
<v Speaker 3>Remember the Silkowsky gear ratio we talked about. Every kilogram

498
00:24:29.920 --> 00:24:32.640
<v Speaker 3>of life support mass you eliminate removes the need from

499
00:24:32.680 --> 00:24:34.799
<v Speaker 3>multiple kilograms of propellant to launch it.

500
00:24:34.799 --> 00:24:36.000
<v Speaker 2>It cascades backwards.

501
00:24:36.359 --> 00:24:40.680
<v Speaker 3>Yes, when you slash the requirement for consumables by eighty percent,

502
00:24:41.400 --> 00:24:44.440
<v Speaker 3>you drastically script down the dry mass of your transit.

503
00:24:44.160 --> 00:24:47.279
<v Speaker 2>Vehicle, which means your spacecraft is lighter and therefore much

504
00:24:47.319 --> 00:24:49.119
<v Speaker 2>easier to push out of Earth's orbit.

505
00:24:49.599 --> 00:24:53.079
<v Speaker 3>Or conversely, you use the exact same heavy lift rockets,

506
00:24:53.480 --> 00:24:55.920
<v Speaker 3>but instead of filling the cargo bay with three years

507
00:24:55.920 --> 00:24:59.359
<v Speaker 3>of food and heavy water shielding, you dedicate that massive

508
00:24:59.359 --> 00:25:02.640
<v Speaker 3>payload capacity to actual scientific infrastructure.

509
00:25:02.880 --> 00:25:08.279
<v Speaker 2>Oh wow, so you send heavy drilling rigs, advanced pressurized rovers,

510
00:25:08.319 --> 00:25:11.119
<v Speaker 2>massive solar arrays, and robust habitats.

511
00:25:11.240 --> 00:25:13.960
<v Speaker 3>You completely change the return on investment. Yeah, the science

512
00:25:14.000 --> 00:25:16.480
<v Speaker 3>yield per kilogram launched goes to the roof.

513
00:25:16.559 --> 00:25:20.039
<v Speaker 2>That's incredible. But this isn't just about crude missions, is it.

514
00:25:20.480 --> 00:25:23.000
<v Speaker 2>How does this impact cargo logistics Because we don't just

515
00:25:23.079 --> 00:25:25.119
<v Speaker 2>want to plant flags, we want a permanent base.

516
00:25:25.400 --> 00:25:28.640
<v Speaker 3>If we connect this to the bigger picture of interplanetary infrastructure,

517
00:25:29.039 --> 00:25:31.559
<v Speaker 3>the implications for cargo are revolutionary.

518
00:25:31.759 --> 00:25:32.400
<v Speaker 2>Walk us through it.

519
00:25:32.720 --> 00:25:37.440
<v Speaker 3>Establishing a permanent sustainable presence on Mars requires a constant

520
00:25:37.559 --> 00:25:41.200
<v Speaker 3>logistical supply chain. You need to build up propellant depots,

521
00:25:41.480 --> 00:25:45.799
<v Speaker 3>spare parts, caches and redundant habitats before you ever risk

522
00:25:46.240 --> 00:25:47.680
<v Speaker 3>sending a human.

523
00:25:47.440 --> 00:25:51.000
<v Speaker 2>Crew, basically setting up orbital gas stations and autonomous factories

524
00:25:51.039 --> 00:25:51.559
<v Speaker 2>ahead of time.

525
00:25:51.680 --> 00:25:56.839
<v Speaker 3>Precisely using these newly discovered rapid transfer corridors, space agencies

526
00:25:56.839 --> 00:26:00.640
<v Speaker 3>can execute much faster automated cargo resupply un So.

527
00:26:00.599 --> 00:26:02.519
<v Speaker 2>No more waiting two years for the pizza delivery.

528
00:26:02.599 --> 00:26:05.839
<v Speaker 3>Exactly, instead of launching a slow convoy that takes nearly

529
00:26:05.880 --> 00:26:08.359
<v Speaker 3>a year to arrive and waiting two years for the

530
00:26:08.400 --> 00:26:11.920
<v Speaker 3>next planetary window, we can utilize these rapid transits to

531
00:26:12.000 --> 00:26:15.240
<v Speaker 3>create a sustainable high frequency cadence emissions.

532
00:26:15.319 --> 00:26:18.480
<v Speaker 2>It accelerates the timeline for Martian colonization from a distant

533
00:26:18.559 --> 00:26:22.960
<v Speaker 2>multigenerational dream into a near term logistical reality. It really does,

534
00:26:23.160 --> 00:26:26.519
<v Speaker 2>which brings us to an incredibly exciting synergy. This mathematical

535
00:26:26.519 --> 00:26:29.440
<v Speaker 2>breakthrough fits perfectly into the physical hardware that the aerospace

536
00:26:29.480 --> 00:26:32.160
<v Speaker 2>industry is already bending metal on right now. Yes, the

537
00:26:32.200 --> 00:26:35.640
<v Speaker 2>timing is perfect because while Susan's math is brand new,

538
00:26:35.920 --> 00:26:39.440
<v Speaker 2>the rockets are already standing on the launch pad. We

539
00:26:39.480 --> 00:26:43.799
<v Speaker 2>are in the middle of a massive technological renaissance in propulsion.

540
00:26:44.240 --> 00:26:49.240
<v Speaker 3>Indeed, we are witnessing an unprepredented mobilization of resources. NASA,

541
00:26:49.359 --> 00:26:52.759
<v Speaker 3>the European Space Agency, and heavily funded private sector giants

542
00:26:52.799 --> 00:26:57.160
<v Speaker 3>like SpaceX are pouring billions into next generation heavy lift

543
00:26:57.240 --> 00:27:01.720
<v Speaker 3>vehicles like Starship, Yes powered by ans mytholics, chemical engines

544
00:27:02.079 --> 00:27:02.720
<v Speaker 3>like the Raptor.

545
00:27:02.920 --> 00:27:05.279
<v Speaker 2>But up until now they've basically been trying to solve

546
00:27:05.279 --> 00:27:07.799
<v Speaker 2>the Mars transit problem through brute force they have.

547
00:27:08.480 --> 00:27:11.839
<v Speaker 3>The prevailing engineering philosophy has been to simply build vastly

548
00:27:11.960 --> 00:27:15.400
<v Speaker 3>larger fuel tanks and more efficient high thrust engines to

549
00:27:15.480 --> 00:27:19.000
<v Speaker 3>try and muscle a spacecraft into a faster non homean trajectory.

550
00:27:19.160 --> 00:27:20.640
<v Speaker 2>Just push harder, exactly.

551
00:27:20.799 --> 00:27:25.240
<v Speaker 3>But chemical propulsion has physical limits in terms of specific impulse. Essentially,

552
00:27:25.279 --> 00:27:27.920
<v Speaker 3>it's fuel efficiency. That is why there is also a

553
00:27:28.000 --> 00:27:32.319
<v Speaker 3>major resurgence in funding for nuclear thermal proportion or NTP.

554
00:27:32.279 --> 00:27:35.079
<v Speaker 2>Okay, nuclear thermal propulsion. I know NASA worked on this

555
00:27:35.160 --> 00:27:37.599
<v Speaker 2>back in the sixties with the Nerva program, but it's

556
00:27:37.640 --> 00:27:40.440
<v Speaker 2>making a massive comeback now with the Draco program. For

557
00:27:40.519 --> 00:27:43.720
<v Speaker 2>the listener who isn't an aerospace engineer, how does an

558
00:27:43.839 --> 00:27:47.000
<v Speaker 2>NTP engine differ from a traditional chemical rocket.

559
00:27:47.319 --> 00:27:50.640
<v Speaker 3>A traditional chemical rocket works by mixing a fuel and

560
00:27:50.720 --> 00:27:55.680
<v Speaker 3>an oxidizer like liquid methane and liquid oxygen, igniting them

561
00:27:55.720 --> 00:27:59.440
<v Speaker 3>in a combustion chamber and blasting the expanding exhaust.

562
00:27:59.000 --> 00:28:01.519
<v Speaker 2>Out the back fire noise exactly.

563
00:28:02.039 --> 00:28:04.920
<v Speaker 3>It generates a lot of thrust, but it requires massive

564
00:28:04.920 --> 00:28:09.000
<v Speaker 3>amounts of heavy oxidizer. A nuclear thermal propulsion system completely

565
00:28:09.039 --> 00:28:11.799
<v Speaker 3>ditches the combustion process. No fire, no fire in the

566
00:28:11.799 --> 00:28:15.319
<v Speaker 3>traditional sense. It uses a small nuclear fission reactor to

567
00:28:15.480 --> 00:28:20.119
<v Speaker 3>rapidly heat a single incredibly light propellant, usually liquid hydrogen,

568
00:28:20.400 --> 00:28:23.720
<v Speaker 3>to thousands of degrees, and then the hydrogen expands violently

569
00:28:23.759 --> 00:28:24.799
<v Speaker 3>and shoots out the nozzle.

570
00:28:25.039 --> 00:28:28.079
<v Speaker 2>So because you are throwing incredibly light hydrogen atoms out

571
00:28:28.119 --> 00:28:31.279
<v Speaker 2>the back at extreme velocities instead of heavy combustion molecules,

572
00:28:31.319 --> 00:28:33.039
<v Speaker 2>it is wildly more fuel efficient.

573
00:28:33.160 --> 00:28:35.960
<v Speaker 3>It provides roughly double the specific impulse of the best

574
00:28:36.039 --> 00:28:40.880
<v Speaker 3>chemical engines. An ANTP system could theoretically have transit times

575
00:28:40.880 --> 00:28:43.440
<v Speaker 3>to Mars even if it was just flying a standard

576
00:28:43.480 --> 00:28:47.960
<v Speaker 3>brute force trajectory. And concurrent with NTP you have the

577
00:28:48.039 --> 00:28:51.640
<v Speaker 3>maturation of isru in city resource utilization.

578
00:28:51.799 --> 00:28:54.240
<v Speaker 2>The Sabatier reaction right, the idea that we aren't going

579
00:28:54.279 --> 00:28:56.319
<v Speaker 2>to bring fuel for the return trip from Earth at

580
00:28:56.319 --> 00:29:00.200
<v Speaker 2>all exactly, we will send automated chemical plants ahead of

581
00:29:00.200 --> 00:29:03.359
<v Speaker 2>the crew. They suck in the Martian carbon dioxide atmosphere,

582
00:29:03.400 --> 00:29:06.640
<v Speaker 2>combine it with hydrogen, use solar arrays for power, and

583
00:29:06.720 --> 00:29:10.400
<v Speaker 2>synthesize liquid methane and oxygen rocket fuel right there on

584
00:29:10.440 --> 00:29:10.960
<v Speaker 2>the surface.

585
00:29:11.079 --> 00:29:14.279
<v Speaker 3>It's brilliant. Isr used the ultimate mass saver because the

586
00:29:14.279 --> 00:29:17.119
<v Speaker 3>fuel for the return trip often accounts for the majority

587
00:29:17.200 --> 00:29:20.359
<v Speaker 3>the initial launch mass from Earth. Right, So you have

588
00:29:20.440 --> 00:29:25.240
<v Speaker 3>heavy lift methlocks, rockets, nuclear thermal propulsion, and Martian isru

589
00:29:25.759 --> 00:29:29.880
<v Speaker 3>and here is where the absolute magic happens. SUS's orbital

590
00:29:29.880 --> 00:29:33.480
<v Speaker 3>shortcut doesn't compete with these technologies, it mathematically multiplies them.

591
00:29:33.559 --> 00:29:36.920
<v Speaker 2>I love this. It's like, Okay, if upgrading from old

592
00:29:37.079 --> 00:29:39.920
<v Speaker 2>solid rocket boosters to a nuclear thermal engine is like

593
00:29:40.000 --> 00:29:42.680
<v Speaker 2>upgrading a car from a sputtering four cylinder engine to

594
00:29:42.759 --> 00:29:47.079
<v Speaker 2>a massive supercharged V eight, then SUS's asteroid shortcut is

595
00:29:47.119 --> 00:29:49.599
<v Speaker 2>like a massive software update to your GPS.

596
00:29:49.920 --> 00:29:53.319
<v Speaker 3>That is exactly the dynamic you can possess the most

597
00:29:53.319 --> 00:29:56.640
<v Speaker 3>powerful efficient engine humanity has ever built. But if your

598
00:29:56.680 --> 00:30:01.000
<v Speaker 3>trajectory calculations keep routing you through the gravitation equivalent of

599
00:30:01.200 --> 00:30:04.599
<v Speaker 3>slow winding country roads and stop and go city traffic,

600
00:30:05.160 --> 00:30:07.720
<v Speaker 3>you are never going to achieve your true top speed.

601
00:30:07.960 --> 00:30:10.640
<v Speaker 2>And SUSA just handed the engineers a GPS route that

602
00:30:10.680 --> 00:30:14.640
<v Speaker 2>completely bypasses the traffic, merging us directly onto a clear,

603
00:30:14.799 --> 00:30:18.079
<v Speaker 2>multi lane highway. Exactly if you combine that supercharged V

604
00:30:18.160 --> 00:30:21.559
<v Speaker 2>eight Mekler engine with this new unobstructed highway, the hybrid

605
00:30:21.640 --> 00:30:24.839
<v Speaker 2>architectures you could theoretically design are staggering.

606
00:30:25.000 --> 00:30:29.640
<v Speaker 3>The synthesis of high specific impulse propulsion and optimized dynamically

607
00:30:29.640 --> 00:30:34.000
<v Speaker 3>stable orbital corridors is the holy grail of bioastronautics.

608
00:30:34.039 --> 00:30:35.039
<v Speaker 2>It really feels like it.

609
00:30:35.079 --> 00:30:37.359
<v Speaker 3>You are no longer just pushing harder against the physics,

610
00:30:37.359 --> 00:30:40.359
<v Speaker 3>you are moving smarter within them. You are leveraging the

611
00:30:40.559 --> 00:30:44.799
<v Speaker 3>natural gravitational architecture of the Solar System to radically amplify

612
00:30:44.839 --> 00:30:46.839
<v Speaker 3>the effectiveness of your propulsion hardware.

613
00:30:46.960 --> 00:30:49.480
<v Speaker 2>Okay, this all sounds phenomenal, but I have enough respect

614
00:30:49.519 --> 00:30:52.519
<v Speaker 2>for orbital mechanics to know that the universe rarely, if

615
00:30:52.559 --> 00:30:54.240
<v Speaker 2>ever gives you something for nothing.

616
00:30:54.319 --> 00:30:55.160
<v Speaker 3>That is very true.

617
00:30:55.400 --> 00:30:58.319
<v Speaker 2>Energy has to be conserved. So what does this all

618
00:30:58.319 --> 00:31:00.880
<v Speaker 2>mean for the engineers actually building the ships? Because it

619
00:31:00.920 --> 00:31:02.680
<v Speaker 2>can't just be free speed. What's the catch?

620
00:31:02.799 --> 00:31:06.039
<v Speaker 3>You are absolutely correct to be skeptical, because physics always

621
00:31:06.079 --> 00:31:10.240
<v Speaker 3>extracts a toll. The primary unavoidable trade off for speed

622
00:31:10.440 --> 00:31:15.400
<v Speaker 3>in orbital mechanics is energy. Spacecraft maneuvers are fundamentally budgeted

623
00:31:15.440 --> 00:31:16.480
<v Speaker 3>in terms of delta V.

624
00:31:16.759 --> 00:31:20.640
<v Speaker 2>Delta V meaning change in velocity. It's the total amount

625
00:31:20.680 --> 00:31:24.000
<v Speaker 2>of acceleration a spacecraft can physically produce based on how

626
00:31:24.079 --> 00:31:25.359
<v Speaker 2>much fuel it is carrying.

627
00:31:25.480 --> 00:31:28.680
<v Speaker 3>Precisely, for context, to launch from the surface of the

628
00:31:28.680 --> 00:31:31.440
<v Speaker 3>Earth and reach low Earth orbit requires about nine point

629
00:31:31.519 --> 00:31:34.519
<v Speaker 3>three kilometers per second of delta v okay to break

630
00:31:34.559 --> 00:31:37.359
<v Speaker 3>out of Earth orbit and enter a slow highly efficient

631
00:31:37.400 --> 00:31:40.680
<v Speaker 3>home and transfer to Mars requires roughly an additional three

632
00:31:40.720 --> 00:31:43.960
<v Speaker 3>point six to four point three kilometers per second. Now,

633
00:31:43.960 --> 00:31:46.759
<v Speaker 3>moving faster inherently demands more energy.

634
00:31:46.960 --> 00:31:47.440
<v Speaker 2>Makes sense.

635
00:31:47.519 --> 00:31:49.200
<v Speaker 3>You have to burn harder to break out of the

636
00:31:49.279 --> 00:31:52.720
<v Speaker 3>slow curves, and crucially, you have to burn incredibly hard

637
00:31:52.720 --> 00:31:55.720
<v Speaker 3>to slow down when you arrive. Otherwise you'll just fly.

638
00:31:55.680 --> 00:31:58.200
<v Speaker 2>Right past Mars right because you don't have friction in

639
00:31:58.279 --> 00:32:01.359
<v Speaker 2>space to slow you down speed up, you have to

640
00:32:01.400 --> 00:32:05.519
<v Speaker 2>pack fuel specifically to cancel out that speed at the destination.

641
00:32:05.640 --> 00:32:10.880
<v Speaker 3>Exactly nowsa's phase space corridors balance this speed and efficiency

642
00:32:11.119 --> 00:32:16.000
<v Speaker 3>significantly better than purely high thrust brute force trajectories often

643
00:32:16.039 --> 00:32:17.759
<v Speaker 3>called brickistochrone paths.

644
00:32:18.240 --> 00:32:19.799
<v Speaker 2>Brickistochrone, what does that mean?

645
00:32:20.079 --> 00:32:23.359
<v Speaker 3>A brichistochrome trajectory involves pointing your ship directly at Mars,

646
00:32:24.000 --> 00:32:26.400
<v Speaker 3>firing the engines continuously for the first half of the

647
00:32:26.400 --> 00:32:29.599
<v Speaker 3>trip to accelerate, and then flipping the ship one hundred

648
00:32:29.599 --> 00:32:33.759
<v Speaker 3>eighty degrees and firing continuously for the second half to decelerate,

649
00:32:34.079 --> 00:32:35.000
<v Speaker 3>like the ship's.

650
00:32:34.680 --> 00:32:38.039
<v Speaker 2>In the Expanse or any hard sci fi novel, Yes.

651
00:32:37.799 --> 00:32:43.119
<v Speaker 3>The torchship concept. Those trajectories provide incredible artificial gravity and speed,

652
00:32:43.559 --> 00:32:46.079
<v Speaker 3>but they require a delta V budget in the tens

653
00:32:46.160 --> 00:32:47.960
<v Speaker 3>or hundreds of kilometers per second.

654
00:32:47.720 --> 00:32:49.039
<v Speaker 2>Which is impossible right now.

655
00:32:49.240 --> 00:32:52.440
<v Speaker 3>It demands an almost magical fuel density that we simply

656
00:32:52.480 --> 00:32:56.200
<v Speaker 3>do not possess. Susa's pathways don't require science fiction physics,

657
00:32:56.640 --> 00:32:58.640
<v Speaker 3>but they are emphatically not free, so.

658
00:32:58.640 --> 00:32:59.640
<v Speaker 2>They still cost a lot.

659
00:33:00.119 --> 00:33:03.279
<v Speaker 3>Delta V required to inject a spacecraft into these one

660
00:33:03.400 --> 00:33:07.240
<v Speaker 3>hundred and fifty three day rapid corridors is substantially higher

661
00:33:07.279 --> 00:33:09.640
<v Speaker 3>than the four kilometers per second needed for a slow

662
00:33:09.759 --> 00:33:10.680
<v Speaker 3>home and transfer.

663
00:33:10.960 --> 00:33:15.319
<v Speaker 2>We're talking maybe seven, eight or ten kilometers per second

664
00:33:15.400 --> 00:33:18.839
<v Speaker 2>of delta V just for the interplanetary injection. Yes, so

665
00:33:18.960 --> 00:33:21.519
<v Speaker 2>the spacecraft still needs to pack a massive punch. It

666
00:33:21.599 --> 00:33:26.200
<v Speaker 2>requires either highly advanced nuclear propulsion or dedicating a massive

667
00:33:26.240 --> 00:33:28.720
<v Speaker 2>percentage of your launch mass to chemical propellants.

668
00:33:28.799 --> 00:33:32.359
<v Speaker 3>It does, it requires a highly energetic departure burn and

669
00:33:32.400 --> 00:33:35.920
<v Speaker 3>beyond the immense fuel requirements, there is the stark reality

670
00:33:35.960 --> 00:33:37.960
<v Speaker 3>of deep space navigation and engineering.

671
00:33:38.039 --> 00:33:40.000
<v Speaker 2>It's not just point and shoot, not at all.

672
00:33:40.079 --> 00:33:43.240
<v Speaker 3>You cannot simply crunch a few elegant equations on a whiteboard,

673
00:33:43.400 --> 00:33:46.720
<v Speaker 3>plug them into an autopilot, and light the engines. SUS's

674
00:33:46.720 --> 00:33:50.319
<v Speaker 3>research is a preliminary proof of concept. Before any human

675
00:33:50.359 --> 00:33:53.960
<v Speaker 3>beings strap into a vehicle, agencies must conduct incredibly high

676
00:33:54.039 --> 00:33:56.039
<v Speaker 3>fidelity supercomputer simulations.

677
00:33:56.160 --> 00:33:59.519
<v Speaker 2>Because the Solar System isn't an idealized vacuum with just Earth,

678
00:33:59.599 --> 00:34:03.079
<v Speaker 2>Mars and one asteroid. It is a messy, chaotic web

679
00:34:03.119 --> 00:34:03.759
<v Speaker 2>of gravity.

680
00:34:03.960 --> 00:34:09.039
<v Speaker 3>It is incredibly chaotic. Mission planners have to painstakingly account

681
00:34:09.079 --> 00:34:11.239
<v Speaker 3>for nbody gravitational perturbations.

682
00:34:11.360 --> 00:34:13.079
<v Speaker 2>What does that look like in practice?

683
00:34:13.480 --> 00:34:17.159
<v Speaker 3>When you are coasting for millions of miles The slight

684
00:34:17.239 --> 00:34:20.400
<v Speaker 3>gravitational tug of Jupiter pulling from the outer Solar System,

685
00:34:20.880 --> 00:34:24.400
<v Speaker 3>or the influence of Venus, or even the slight unevenness

686
00:34:24.400 --> 00:34:27.039
<v Speaker 3>of Earth's ozone gravity well will act upon the.

687
00:34:27.039 --> 00:34:30.880
<v Speaker 2>Spacecraft, and over a distance of one hundred million miles,

688
00:34:30.960 --> 00:34:33.519
<v Speaker 2>a deviation of a fraction of a degree right after

689
00:34:33.639 --> 00:34:37.639
<v Speaker 2>launch translates into missing Mars by hundreds of thousands of miles.

690
00:34:37.719 --> 00:34:40.920
<v Speaker 3>Exactly, you drift way off course. Furthermore, we have to

691
00:34:40.960 --> 00:34:44.800
<v Speaker 3>account for non gravitational forces. Solar radiation pressure is a

692
00:34:44.840 --> 00:34:45.519
<v Speaker 3>major factor.

693
00:34:45.639 --> 00:34:48.559
<v Speaker 2>Wait sunlight physically pushes the spacecraft.

694
00:34:48.599 --> 00:34:51.760
<v Speaker 3>It does. Photons emitted by the Sun carry no mass,

695
00:34:52.079 --> 00:34:53.320
<v Speaker 3>but they do carry momentum.

696
00:34:53.519 --> 00:34:54.159
<v Speaker 2>That's wild.

697
00:34:54.280 --> 00:34:56.440
<v Speaker 3>When they strike the hull or the solar arrays of

698
00:34:56.480 --> 00:35:00.679
<v Speaker 3>the spacecraft, they exert a tiny, continuous physical force. Over

699
00:35:00.760 --> 00:35:04.000
<v Speaker 3>a five month journey, that constant pressure can alter your

700
00:35:04.039 --> 00:35:06.079
<v Speaker 3>trajectory significantly.

701
00:35:05.400 --> 00:35:07.679
<v Speaker 2>So you're constantly being blown off course by the Sun.

702
00:35:08.039 --> 00:35:13.440
<v Speaker 3>Yes, all of these minute cumulative forces must be anticipated

703
00:35:13.480 --> 00:35:18.079
<v Speaker 3>and corrected for with highly precise mid course correction burns.

704
00:35:17.800 --> 00:35:20.679
<v Speaker 2>Which means you have to fire small thrusters along the

705
00:35:20.679 --> 00:35:23.679
<v Speaker 2>way to stay perfectly in that mathematical groove and every

706
00:35:23.679 --> 00:35:26.239
<v Speaker 2>time you fire a thruster, you are eating into your

707
00:35:26.280 --> 00:35:28.199
<v Speaker 2>precious Delta V fuel budget.

708
00:35:28.280 --> 00:35:28.960
<v Speaker 3>You are the.

709
00:35:29.000 --> 00:35:32.239
<v Speaker 2>Navigation has to be absolutely perfectly flawless.

710
00:35:32.239 --> 00:35:35.800
<v Speaker 3>Flawless is the operative word, and we must also soberly

711
00:35:35.840 --> 00:35:40.119
<v Speaker 3>address the lingering physiological and operational bottlenecks that a faster

712
00:35:40.239 --> 00:35:44.719
<v Speaker 3>transit simply cannot solvey. First communication latency. Even if you

713
00:35:44.800 --> 00:35:47.519
<v Speaker 3>arrive in five months, when you're orbiting Mars, you are

714
00:35:47.559 --> 00:35:49.960
<v Speaker 3>still bound by the speed of light. You are still

715
00:35:50.039 --> 00:35:52.599
<v Speaker 3>up to twenty two light minutes away from Houston. A

716
00:35:52.639 --> 00:35:54.599
<v Speaker 3>fast transit does not make light travel.

717
00:35:54.360 --> 00:35:57.599
<v Speaker 2>Any faster, which means if something goes critically wrong a

718
00:35:57.679 --> 00:36:00.400
<v Speaker 2>fire in the habitat, a life support failure, you are

719
00:36:00.480 --> 00:36:04.239
<v Speaker 2>completely on your own. Houston cannot remotely pilot the ship

720
00:36:04.280 --> 00:36:05.079
<v Speaker 2>to save you.

721
00:36:05.079 --> 00:36:08.480
<v Speaker 3>You are entirely autonomous during critical moments, and arguably the

722
00:36:08.519 --> 00:36:12.960
<v Speaker 3>most terrifying critical moment of any Mars mission is EDL entry, descent,

723
00:36:13.039 --> 00:36:15.599
<v Speaker 3>and landing. Getting to Mars is only half the battle.

724
00:36:16.280 --> 00:36:19.079
<v Speaker 3>Surviving the arrival is the real crucible.

725
00:36:18.920 --> 00:36:22.239
<v Speaker 2>Right because Mars has just enough atmosphere to violently heat

726
00:36:22.320 --> 00:36:25.360
<v Speaker 2>up and burn your spacecraft due to hypersonic friction exactly,

727
00:36:25.440 --> 00:36:28.280
<v Speaker 2>But the atmosphere is so thin, about one percent of

728
00:36:28.320 --> 00:36:32.639
<v Speaker 2>Earth's density, that parachutes are practically useless for heavy payloads.

729
00:36:32.800 --> 00:36:36.559
<v Speaker 3>Exactly, the ballistic coefficient of a human class Mars lander

730
00:36:36.800 --> 00:36:41.920
<v Speaker 3>is massive. Arriving at Mars significantly faster via Sus' corridors

731
00:36:42.280 --> 00:36:45.440
<v Speaker 3>means you are slamming into the upper Martian atmosphere at

732
00:36:45.480 --> 00:36:48.119
<v Speaker 3>a much higher relative velocity, So you come in hotter.

733
00:36:48.360 --> 00:36:51.599
<v Speaker 3>You have to dissipate all of that immense kinetic energy.

734
00:36:51.960 --> 00:36:55.679
<v Speaker 3>Because the atmosphere cannot slow a massive forty ton crew

735
00:36:55.719 --> 00:37:00.760
<v Speaker 3>habitat down sufficiently, you have to rely on hypersonic retropropulsion.

736
00:37:00.599 --> 00:37:03.760
<v Speaker 2>Firing heavy rocket engines into the supersonic slipstream of the

737
00:37:03.800 --> 00:37:06.400
<v Speaker 2>atmosphere just before you hit the ground. Yes, the famous

738
00:37:06.440 --> 00:37:09.280
<v Speaker 2>seven minutes of terror where the spacecraft has to execute

739
00:37:09.320 --> 00:37:13.719
<v Speaker 2>thousands of autonomous calculations and maneuvers flawlessly just to survive,

740
00:37:14.159 --> 00:37:16.559
<v Speaker 2>and coming in hotter just makes the thermal and aerodynamic

741
00:37:16.639 --> 00:37:18.639
<v Speaker 2>stress on the heat shield even more punishing.

742
00:37:18.960 --> 00:37:24.000
<v Speaker 3>It immensely complicates an already bleeding edge engineering challenge. And finally,

743
00:37:24.239 --> 00:37:27.880
<v Speaker 3>no matter how brief the journey is, space remains unforgiving

744
00:37:28.079 --> 00:37:31.159
<v Speaker 3>aye ways. If a critical component of your closed loop

745
00:37:31.199 --> 00:37:34.679
<v Speaker 3>life support system fails catastrophically on day thirty of one

746
00:37:34.760 --> 00:37:37.159
<v Speaker 3>hundred and fifty day trip, and you cannot repair it.

747
00:37:37.480 --> 00:37:39.960
<v Speaker 3>The crew is in just as much mortal peril as

748
00:37:39.960 --> 00:37:41.880
<v Speaker 3>they would be on day three hundred of a three

749
00:37:41.960 --> 00:37:45.400
<v Speaker 3>year trip. Right, there are no abort scenarios in deep space.

750
00:37:45.480 --> 00:37:48.639
<v Speaker 2>The shortcut gets you there faster, minimizing your exposure time,

751
00:37:48.880 --> 00:37:51.960
<v Speaker 2>but it doesn't make the environment itself any less lethal

752
00:37:52.159 --> 00:37:55.400
<v Speaker 2>while you are in it. Precisely, but even acknowledging all

753
00:37:55.480 --> 00:38:00.000
<v Speaker 2>of those massive, very real engineering caveats, the paradigm shift

754
00:38:00.079 --> 00:38:01.719
<v Speaker 2>here is absolutely.

755
00:38:01.239 --> 00:38:02.639
<v Speaker 3>Undeniable, oh without a doubt.

756
00:38:02.840 --> 00:38:07.320
<v Speaker 2>Cleverly reinterpreting the existing orbital data of small bodies by

757
00:38:07.360 --> 00:38:09.480
<v Speaker 2>looking at an asteroid we already had on file and

758
00:38:09.519 --> 00:38:12.840
<v Speaker 2>deciding to ask a completely different mathematical question, we are

759
00:38:12.880 --> 00:38:16.880
<v Speaker 2>turning an impossibly hazardous multi year survival trial into something

760
00:38:16.960 --> 00:38:20.639
<v Speaker 2>resembling a routine, highly predictable interplanetary commute.

761
00:38:20.679 --> 00:38:24.639
<v Speaker 3>It profoundly alters our fundamental understanding of our local cosmic environment.

762
00:38:24.800 --> 00:38:25.360
<v Speaker 2>It really does.

763
00:38:25.719 --> 00:38:28.920
<v Speaker 3>The Solar system is not just a static, fixed highway

764
00:38:29.239 --> 00:38:32.760
<v Speaker 3>with only one agonizingly slow lane available to us. It

765
00:38:32.880 --> 00:38:37.119
<v Speaker 3>is a highly dynamic, constantly shifting, multi layered environment full

766
00:38:37.119 --> 00:38:41.440
<v Speaker 3>of hidden efficiencies, natural gravitational currents, and rapid transit.

767
00:38:41.119 --> 00:38:44.599
<v Speaker 2>Corridors, provided you possess the mathematical creativity to go.

768
00:38:44.519 --> 00:38:45.920
<v Speaker 3>Looking for them exactly.

769
00:38:46.000 --> 00:38:47.840
<v Speaker 2>And the most exciting part for me is that the

770
00:38:47.840 --> 00:38:50.360
<v Speaker 2>twenty thirty one window is just the beginning of this

771
00:38:50.440 --> 00:38:53.400
<v Speaker 2>new discipline. Asteroid two thousand and one CAA twenty one

772
00:38:53.480 --> 00:38:54.519
<v Speaker 2>is literally just one.

773
00:38:54.480 --> 00:38:55.599
<v Speaker 3>Rock, just one of many.

774
00:38:55.800 --> 00:38:58.920
<v Speaker 2>We have cataloged tens of thousands of near Earth asteroids

775
00:38:59.199 --> 00:39:03.880
<v Speaker 2>with incredibly well documented, highly precise orbital elements. The next

776
00:39:03.920 --> 00:39:06.880
<v Speaker 2>logical step for the orbital mechanics community is to start

777
00:39:06.920 --> 00:39:11.039
<v Speaker 2>feeding all of that historical data into these new supercomputer models.

778
00:39:11.239 --> 00:39:14.360
<v Speaker 3>That is the immediate frontier researchers are going to rigorously

779
00:39:14.360 --> 00:39:17.559
<v Speaker 3>scan the diverse trajectories of thousands of other celestial bodies

780
00:39:17.679 --> 00:39:20.360
<v Speaker 3>to catalog what will essentially become a massive family of

781
00:39:20.440 --> 00:39:22.360
<v Speaker 3>rapid transfer corridors.

782
00:39:21.840 --> 00:39:23.400
<v Speaker 2>Like a directory of fast lanes.

783
00:39:23.800 --> 00:39:28.000
<v Speaker 3>Yes, we will likely map out an extensive, overlapping network

784
00:39:28.079 --> 00:39:31.239
<v Speaker 3>of fast lanes for various opposition years, not just for Mars,

785
00:39:31.519 --> 00:39:34.599
<v Speaker 3>but potentially for Venus, the asteroid belt and beyond.

786
00:39:34.880 --> 00:39:38.119
<v Speaker 2>It is genuinely the first step in building a true

787
00:39:38.760 --> 00:39:41.280
<v Speaker 2>multi layered subway map for the Solar.

788
00:39:40.960 --> 00:39:42.559
<v Speaker 3>System, the cosmic subway map.

789
00:39:42.599 --> 00:39:44.519
<v Speaker 2>I like that, which brings me to a final thought.

790
00:39:44.559 --> 00:39:48.159
<v Speaker 2>I want you, the listener, to mull over long after

791
00:39:48.199 --> 00:39:51.880
<v Speaker 2>this discussion ends. Okay, we have just explored how a

792
00:39:51.920 --> 00:39:55.760
<v Speaker 2>single near Earth asteroid, a rock that was catalog decades

793
00:39:55.800 --> 00:39:59.239
<v Speaker 2>ago and basically considered just a mundane, boring entry in

794
00:39:59.280 --> 00:40:03.039
<v Speaker 2>a dusty astronomical database, turned out to hold the mathematical

795
00:40:03.119 --> 00:40:06.400
<v Speaker 2>key to fundamentally altering human expansion into the cosmos.

796
00:40:06.440 --> 00:40:07.480
<v Speaker 3>It's humbling, really, It.

797
00:40:07.480 --> 00:40:11.159
<v Speaker 2>Really forces you to wonder what other massive paradigm shifting

798
00:40:11.199 --> 00:40:13.920
<v Speaker 2>secrets are currently hiding in plain sight. How many other

799
00:40:13.960 --> 00:40:18.159
<v Speaker 2>impossible engineering problems in medicine, in physics, or in energy

800
00:40:18.280 --> 00:40:21.519
<v Speaker 2>could be solved right now, hiding silently within the mountains

801
00:40:21.519 --> 00:40:24.679
<v Speaker 2>of mundane data we already possess, just waiting for someone

802
00:40:24.679 --> 00:40:26.599
<v Speaker 2>to tilt their head, look at it differently, and ask

803
00:40:26.639 --> 00:40:27.320
<v Speaker 2>the right question.
