WEBVTT

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<v Speaker 1>Black Friday is coming, and for the adults in your

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<v Speaker 1>life who love the coolest toys, well there's something for

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<v Speaker 1>them this year too. Bartisian is the premiere craft cocktail

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<v Speaker 1>in your life has been good this year or the

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<v Speaker 2>Amazing toys aren't just for kids.

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<v Speaker 1>That's ba r t E sia n dot com slash cocktail.

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<v Speaker 3>Have you googled yourself lately? Are there negative posts from

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<v Speaker 3>outdated news article. Search engines don't always get it right,

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<v Speaker 3>eight hundred eight one one forty nine seventy five to

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<v Speaker 3>speak to an expert.

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<v Speaker 4>Welcome to Astronomy Daily.

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<v Speaker 5>I'm Anna, and we have an absolutely fascinating lineup of

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<v Speaker 5>space discoveries and astronomical events to share with you today.

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<v Speaker 5>From groundbreaking research that's challenging Einstein's fundamental theories about the universe,

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<v Speaker 5>to new insights about how space travel affects human aging,

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<v Speaker 5>the world of space science continues to amaze.

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<v Speaker 4>And surprise us.

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<v Speaker 5>We'll also explore some spectacular cosmic events, including a brilliant

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<v Speaker 5>fireball that lit up the North American skies and an

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<v Speaker 5>extraordinary experiment where NASA created artificial clouds beneath the glowing

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<v Speaker 5>auroras of Norway. Plus, we'll look at the latest developments

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<v Speaker 5>in satellite servicing technology and get an update on NASA's

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<v Speaker 5>ambitious Tracer's mission. Stay with me as we journey through

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<v Speaker 5>these extraordinary stories that are expanding our understanding of the

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<v Speaker 5>cosmos and our place within it. Our first story today

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<v Speaker 5>challenges one of the most fundamental theories in physics. Scientists

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<v Speaker 5>from the universities of Geneva and Toulouse have been analyzing

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<v Speaker 5>data from the Dark Energy Survey, and what they've found

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<v Speaker 5>might make Einstein himself raise an eyebrow. They've been testing

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<v Speaker 5>how gravity bends space and time across different periods of

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<v Speaker 5>the universe's history, and the results aren't quite matching what

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<v Speaker 5>Einstein's equations predicted. Think of the universe like a giant,

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<v Speaker 5>flexible sheet that gets bent and curved by massive objects.

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<v Speaker 5>That's how Einstein describes space time. When light travels through

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<v Speaker 5>these curved areas, it bends, similar to how a glass

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<v Speaker 5>lens bends light. Scientists call this gravitation lensing, and it's

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<v Speaker 5>been one of the cornerstones of our understanding of how

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<v Speaker 5>the universe works. The research team looked at an incredible

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<v Speaker 5>one hundred million galaxies at different points in cosmic history,

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<v Speaker 5>ranging from three point five to seven billion years ago.

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<v Speaker 5>Here's where it gets interesting. When they looked at the

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<v Speaker 5>distant past around six to seven billion years ago, everything

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<v Speaker 5>lined up perfectly with Einstein's predictions. But as they looked

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<v Speaker 5>at more recent times, about three point five to five

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<v Speaker 5>billion years ago, they noticed something odd. The gravitational effects

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<v Speaker 5>were slightly weaker than Einstein's theory suggested they should be.

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<v Speaker 5>What makes this particularly intriguing is that this period coincides

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<v Speaker 5>with when the universe's expansion started accelerating, something we still

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<v Speaker 5>don't fully understand. Could these two mysteries be connected. The

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<v Speaker 5>researchers think we might need to consider the possibility that

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<v Speaker 5>gravity works differently at very large scales than Einstein's equations predict. Now,

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<v Speaker 5>before we declare Einstein's theory in valid, it's important to

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<v Speaker 5>note that the difference they found isn't quite strong enough

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<v Speaker 5>to completely overturn his work. The scientists are calling it

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<v Speaker 5>a three sigma difference, interesting enough to warrant further investigation,

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<v Speaker 5>but not yet at the five sigma threshold that would

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<v Speaker 5>signal a definitive discovery. They're now looking forward to analyzing

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<v Speaker 5>new data from the EUCLID space telescope which should provide

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<v Speaker 5>even more precise measurements to help solve this cosmic puzzle.

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<v Speaker 5>The mysteries of space travel continue to reveal new challenges

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<v Speaker 5>for human exploration, with recent research shedding light on how

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<v Speaker 5>spaceflight affects our bodies at a fundamental level, speaking of

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<v Speaker 5>science that needs further investigation, but interesting nonetheless, a groundbreaking

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<v Speaker 5>study has found that time spent in space appears to

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<v Speaker 5>accelerate many of the biological processes we typically associate with

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<v Speaker 5>aging here on Earth. When astronauts venture beyond our atmosphere,

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<v Speaker 5>their bodies undergo remarkable changes that mirror what happens during

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<v Speaker 5>the age process, but at an accelerated rate. Scientists have

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<v Speaker 5>discovered that space travel triggers significant shifts in genomic stability

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<v Speaker 5>and causes our cellular powerhouses the mitochondria, to function less efficiently,

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<v Speaker 5>similar to what happens as we age naturally. One of

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<v Speaker 5>the most striking findings is how spaceflight affects inflammation in

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<v Speaker 5>the body. The research shows that astronauts experience increased inflammatory responses,

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<v Speaker 5>much like what we see in elderly populations on Earth.

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<v Speaker 5>This is particularly concerning when we consider muscle health, as

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<v Speaker 5>the study revealed patterns of muscle wasting that closely resemble

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<v Speaker 5>a condition known as sarcophenia, which typically affects older adults.

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<v Speaker 5>Perhaps most significantly, this is the first comprehensive examination that

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<v Speaker 5>draws direct parallels between spaceflight and what scientists call biomarkers

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<v Speaker 5>of frailty. These are essentially biological warning signs that indicate

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<v Speaker 5>how quickly our bodies are aging and becoming more vulnerable

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<v Speaker 5>to health issues. The research suggests that time and space

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<v Speaker 5>might actually induce a frailty like condition in astronauts, regardless

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<v Speaker 5>of their age. These findings aren't just important for space exploration,

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<v Speaker 5>they could have far reaching implications for healthcare, both in

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<v Speaker 5>space and on Earth. By understanding how spaceflight accelerates these

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<v Speaker 5>aging processes, scientists might be able to develop new treatments

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<v Speaker 5>that could help both astronauts and elderly populations. The research

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<v Speaker 5>team is now advocating for the development of a specialized

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<v Speaker 5>frailty index to monitor astronaut health during missions, which could

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<v Speaker 5>become a crucial tool for ensuring the safety of future

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<v Speaker 5>space explorers. Exciting developments are underway in the satellite servicing industry,

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<v Speaker 5>as Northrop Grumman's Space Logistics division prepares for a groundbreaking

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<v Speaker 5>twenty twenty six launch. They're developing what's called the Mission

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<v Speaker 5>Robotic Vehicle, or MRV, a sophisticated spacecraft equipped with robotic

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<v Speaker 5>arms that could revolutionize how we maintain satellites in orbit.

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<v Speaker 5>These aren't just any robotic arms. They've been specially developed

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<v Speaker 5>by the US Naval Research Laboratory and have already passed

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<v Speaker 5>crucial testing phases. The arms will enable the MRV to

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<v Speaker 5>perform intricate tasks on satellites positioned more than twenty two

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<v Speaker 5>five hundred miles above Earth in geostationary orbit, where many

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<v Speaker 5>of our critical communication satellites operate. What makes this particularly

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<v Speaker 5>interesting is that space Logistics has already secured its first customers.

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<v Speaker 5>Both Intelsat and Optis have signed up to have their

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<v Speaker 5>satellite serviced with what are called mission extension pods. Think

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<v Speaker 5>of these as space based jetpacks that can add about

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<v Speaker 5>six years of operational life to satellites that are running

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<v Speaker 5>low on fuel. This is crucial because roughly ten satellites

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<v Speaker 5>in geostationary orbit reach the end of their operational life

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<v Speaker 5>each year simply because they run out of fuel. The

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<v Speaker 5>MRV represents a significant advancement over previous satellite servicing vehicles.

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<v Speaker 5>Unlike its predecessors, it will be capable of performing more

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<v Speaker 5>sophisticated tasks, including detailed inspections, repairs, and even relocating satellites

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<v Speaker 5>to different orbits. These capabilities could prove invaluable for both

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<v Speaker 5>commercial operators and government agencies looking to extend the life

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<v Speaker 5>of their space assets. The economics of this technology are

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<v Speaker 5>particularly compelling. The mission extension pods, weighing about three hundred

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<v Speaker 5>and fifty kilograms each, offer a more cost effective solution

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<v Speaker 5>compared to launching entirely new satellites. By using electric propulsion

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<v Speaker 5>to reach their target orbits and relying on the MRV

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<v Speaker 5>for installation, these pods provide a practical way to extend

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<v Speaker 5>satellite operations without the enormous expense of replacement missions.

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<v Speaker 1>Black Friday is coming, and for the adults in your

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<v Speaker 1>life who love the the coolest toys, well there's something

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<v Speaker 1>for them this year too. Martisian is the premiere craft

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<v Speaker 1>cocktail maker that automatically makes more than sixty seasonal and

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<v Speaker 1>classic cocktail each and out of thirty seconds at the

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<v Speaker 1>push of a button. And right now, Bartisian is having

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<v Speaker 1>a huge sight wide sale.

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<v Speaker 2>You can get one hundred dollars off.

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<v Speaker 1>Any cocktail maker or cocktail maker bundle when you spend

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<v Speaker 1>four hundred dollars or more so, if the cocktail lover

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<v Speaker 1>in your life has been good this year or the

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<v Speaker 1>right kind of bad, get them Bartesian at the push

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<v Speaker 1>of a button, make Bark quality Cosmopolitans, Martini's, Manhattan's, and more,

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<v Speaker 1>all in just thirty seconds, all for ae hundred off.

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<v Speaker 2>Amazing toys aren't just for kids.

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<v Speaker 1>Get one hundred off a cocktail maker when you spend

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<v Speaker 1>four hundred through Cyber Monday. Visit Bartsian dot com slash cocktail.

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<v Speaker 1>That's b A r t e sia n dot com

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<v Speaker 1>slash cocktail.

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<v Speaker 6>Recently, a new client called me and started by saying,

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<v Speaker 6>mister Morgan, I really need your help, but I'm just

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<v Speaker 6>Everybody who comes to our firm at their time of

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<v Speaker 6>grandmother was like a queen to us at Morgan and Morgan.

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<v Speaker 6>Our goal is to level the playing field for you

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<v Speaker 5>In a stunning display of science meeting natural wonder, NASA

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<v Speaker 5>recently conducted a fascinating experiment in the Auroral skies over Norway.

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<v Speaker 5>On November tenth, during a minor geomagnetic storm, two rockets

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<v Speaker 5>launched from the Andoya Space Center carried out what's known

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<v Speaker 5>as the Vorticity Experiment or vortex, creating artificial clouds that

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<v Speaker 5>danced beneath the shimmering northern lights. The purpose of this

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<v Speaker 5>experiment was to better understand the complex interactions occurring in

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<v Speaker 5>a particular region of our atmosphere called the turbopause. This

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<v Speaker 5>is where the mesosphere meets the thermosphere about fifty six

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<v Speaker 5>miles up. To study these interactions, the rockets released a

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<v Speaker 5>compound called trimethyl aluminum, which formed visible swirling patterns in

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<v Speaker 5>the sky. Local photographer Ivar Sandland captured this remarkable event

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<v Speaker 5>while on a road trip near Mount Stetton, Norway's National Mountain.

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<v Speaker 5>He initially thought he was witnessing some strange cloud formation,

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<v Speaker 5>only to later discover he had documented a significant scientific

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<v Speaker 5>experiment in action. The timing couldn't have been better, as

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<v Speaker 5>the artificial clouds appeared against a backdrop of vibrant auroral displays.

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<v Speaker 5>The location of this experiment wasn't chosen by chance. The

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<v Speaker 5>end doors OJEA Space Center's position near the Arctic Circle

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<v Speaker 5>makes it an ideal spot for studying geomagnetic activity and auroras.

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<v Speaker 5>This is because Earth's magnetic field naturally funnels charge particles

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<v Speaker 5>from the Sun toward the poles, creating the perfect natural

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<v Speaker 5>laboratory for understanding space weather phenomena. These artificial clouds aren't

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<v Speaker 5>just for show. They serve as visible tracers that help

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<v Speaker 5>scientists understand how gravity waves behave and interact at this

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<v Speaker 5>crucial boundary in our atmosphere. This knowledge is vital for

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<v Speaker 5>improving our understanding of atmospheric dynamics and their influence on

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<v Speaker 5>our planet's weather and climate systems. While on the subject

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<v Speaker 5>of unusual sits in our skies, a spectacular fireball lit

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<v Speaker 5>up the skies over North America earlier this week, treating

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<v Speaker 5>observers across the US Midwest and parts of Canada to

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<v Speaker 5>a dazzling celestial show. Unlike the recent Starlink satellite re entry,

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<v Speaker 5>this was a genuine visitor from outer space, blazing through

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<v Speaker 5>our atmosphere early Monday morning at around six thirty one

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<v Speaker 5>mountain time.

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<v Speaker 4>The media created.

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<v Speaker 5>Quite a spectacle as it streaked southeast across the morning sky,

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<v Speaker 5>visible from Alberta and Saskatchewan in Canada, throughout Montana, Idaho,

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<v Speaker 5>and parts of Washington, Wyoming, and North Dakota.

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<v Speaker 4>Eyewitnesses described a.

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<v Speaker 5>Brilliant green streak that brightened dramatically for several seconds, creating

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<v Speaker 5>such intense illumination that it briefly lit up the surrounding

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<v Speaker 5>landscape like early morning. What makes this event particularly noteworthy

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<v Speaker 5>is that it was captured not only by countless doorbell cameras,

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<v Speaker 5>dash cams, and cell phones on the ground, but also

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<v Speaker 5>by sophisticated equipment in space to Noah whether satellites, GOES

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<v Speaker 5>sixteen and Goes eighteen detected the fireball using their lightning

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<v Speaker 5>detection instruments, providing a unique perspective of this cosmic event

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<v Speaker 5>from above. According to reports submitted to the American meteor Society,

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<v Speaker 5>this was an exceptionally bright fireball. One observer in Alberta

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<v Speaker 5>noted it was among the most spectacle tacular they'd ever witnessed,

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<v Speaker 5>describing a greenish streak followed by an intense flash with

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<v Speaker 5>a secondary dimmer flash along the same trail. Another witness

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<v Speaker 5>in Montana reported that the meteor was so bright it

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<v Speaker 5>temporarily illuminated their surroundings as if it were mid morning.

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<v Speaker 5>These impressive displays occur when small pieces of space debris,

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<v Speaker 5>known as meteoroids, collide with Earth's atmosphere at extremely high speeds.

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<v Speaker 5>The friction generated by these collisions with air particles creates

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<v Speaker 5>intense heat that vaporizes the space rocks, producing the brilliant

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<v Speaker 5>streaks of light we see as meteors. While most of

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<v Speaker 5>these visitors from space completely burn up in our atmosphere,

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<v Speaker 5>they certainly know how to put on a spectacular show.

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<v Speaker 4>On their way out.

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<v Speaker 5>Next up, NASA's Tracer's mission has just hit a significant

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<v Speaker 5>milestone with the completion of its twin spacecraft, marking a

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<v Speaker 5>crucial step forward in our quest to better understand space weather.

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<v Speaker 4>These satellites, built.

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<v Speaker 5>By Millennium Space Systems, are designed to study a fascinating

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<v Speaker 5>phenomenon that occurs where the solar wind meets Earth's protective

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<v Speaker 5>magnetic field. The mission's primary focus is investigating magnetic reconnection,

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<v Speaker 5>a powerful process that happens when magnetic fields intersect and

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<v Speaker 5>release enormous amounts of energy. Think of it as a

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<v Speaker 5>cosmic dance between the Sun's magnetic field and Earth's magnetosphere,

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<v Speaker 5>creating bursts of energy that can affect everything from our

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<v Speaker 5>power grids to satellite communications. What makes Tracers particularly innovative

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<v Speaker 5>is its unique approach, using two satellites flying in formation

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<v Speaker 5>through Earth's polar cusps. These are funnel shaped regions where

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<v Speaker 5>our planet's magnetic field opens up over the North and

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<v Speaker 5>South poles. By having two spacecraft collecting data in tandem,

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<v Speaker 5>scientists will be able to observe how quickly these magnetic

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<v Speaker 5>reconnection events evolve and change, giving us unprecedented insights into

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<v Speaker 5>these complex processes. The completion of both satellites marks the

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<v Speaker 5>transition from development to the crucial testing phase. Once testing

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<v Speaker 5>wraps up, they'll be shipped to Vandenberg Space four Space

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<v Speaker 5>in California for integration with their launch vehicle. The mission

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<v Speaker 5>team is working towards a target launch date in early

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<v Speaker 5>twenty twenty five, and they've already passed a critical review

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<v Speaker 5>that gives them the green light to move forward with

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<v Speaker 5>final preparations. This mission couldn't come at a more important time.

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<v Speaker 5>As our society becomes increasingly dependent on satellite technology and

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<v Speaker 5>power grids, understanding space weather becomes crucial for protecting our infrastructure.

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<v Speaker 5>These twin spacecraft will serve as our eyes in the sky,

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<v Speaker 5>helping us better predict and prepare for space weather events

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<v Speaker 5>that could impact our daily lives. Now, we have a

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<v Speaker 5>fascinating story of galactic survival which is unfolding right in

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<v Speaker 5>our cosmic backyard, and the Hubble Space Telescope has given

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<v Speaker 5>us a front row seat. The large Magellanic Cloud, one

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<v Speaker 5>of our nearest galactic neighbors, has apparently just survived what

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<v Speaker 5>we might call a close brush with the Milky Way,

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<v Speaker 5>and it's showing us the scars of this encounter. This

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<v Speaker 5>dwarf galaxy, which appears in our southern sky as an

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<v Speaker 5>eye object about twenty times larger than the full Moon,

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<v Speaker 5>seems to be just passing through rather than orbiting our galaxy.

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<v Speaker 5>Scientists have discovered that this cosmic drive by has literally

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<v Speaker 5>stripped away most of the gas surrounding the LMC, leaving

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<v Speaker 5>it with an unusually small halo just fifty thousand light

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<v Speaker 5>years across, which is tiny compared to similar galaxies. But

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<v Speaker 5>here's what makes this story remarkable. The LMC has emerged

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<v Speaker 5>as a true survivor. Despite losing most of its gaseous

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<v Speaker 5>halo to our galaxy's gravitational influence, it's managed to hold

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<v Speaker 5>on to just enough gas to keep forming new stars.

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<v Speaker 5>This resilience comes down to its size. At about ten

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<v Speaker 5>percent of the Milky Way's mass, it's actually quite hefty

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<v Speaker 5>for a dwarf galaxy. The process that's stripped away most

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<v Speaker 5>of the lmc's gas is called ram pressure stripping. Imagine

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<v Speaker 5>our galaxy acting like a giant hair dryer, blowing away

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<v Speaker 5>the lmc's gas as it passes through. The intense pressure

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<v Speaker 5>has pushed back most of the original halo leaving just

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<v Speaker 5>a small, stubborn remnant that refuses to be blown away.

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<v Speaker 5>We know all this thanks to Hubble's unique ability to

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<v Speaker 5>observe ultraviolet light and some clever use of background quasers

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<v Speaker 5>as cosmic flashlights. The telescope analyzed light from twenty eight

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<v Speaker 5>distant quasers passing through the lmc's halo, giving scientists their

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<v Speaker 5>first real measurement of what's left of this cosmic survivor's

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<v Speaker 5>gaseous envelope. Well, that brings us to the end of

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<v Speaker 5>another fascinating episode of Astronomy Daily. I'm Anna, and I

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<v Speaker 5>want to thank you for joining me on this journey

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<v Speaker 5>through the latest discoveries in space and astronomy. From Einstein's

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<v Speaker 5>theories being challenged to spectacular fireballs lighting up North American skies.

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<v Speaker 4>It's been quite a show today.

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<v Speaker 5>If you're hungry for more space news, I've got great

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<v Speaker 5>news for you. You can catch up on all the

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<v Speaker 5>latest developments in space and astronomy at our website, Astronomy

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<v Speaker 5>Daily dot io. There you'll find our constantly updating news feed,

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<v Speaker 5>all our past episodes, and you can sign up for

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<v Speaker 5>our free daily newsletter to never miss a beat in

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<v Speaker 5>space exploration and Hey, let's stay connected. You can find

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00:19:03.960 --> 00:19:06.960
<v Speaker 5>us across all major social media platforms. Just search for

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<v Speaker 5>Astro Daily Pod on Facebook, x, YouTube and TikTok. Until

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00:19:11.920 --> 00:19:14.119
<v Speaker 5>next time, keep looking up and stay curious about our

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<v Speaker 5>incredible universey.

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<v Speaker 3>Start.

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