Speaker 1: Four astronauts, one rocket, and weather that just will not cooperate.
The Crew twelve team is in quarantine in Florida, watching
the forecast and waiting.
Speaker 2: A visitor from another solar system is heading for the
exit and handing us a chemical blueprint of its home
solar system on the way out. Plus a rover on
Mars just took orders from an AI instead of a
human for the very first time.
Speaker 1: All that plus a rare solar eclipse just days away,
new research that could change how we search for life,
and starship making a comeback after a dramatic setback. It's
a big day. Welcome to Astronomy Daily.
Speaker 2: Let's get started. Anna take it away.
Speaker 1: Hello, and welcome to Astronomy Daily, your daily guide to
what's happening out there.
Speaker 2: I'm Anna and I'm Avery. It is Wednesday, February eleventh,
twenty twenty six. We have six stories to get through today,
and it's one of those lineups where every single one
of them earns its place.
Speaker 1: We're going to kick off with the ongoing Crew twelve
drama at Cape Canaveral, then swing to deep Space for
the latest from three I Slash Atlas, and then we've
got a mars Ai story that genuinely made me stop
and think, some fascinating new science about why Earth ended
up being habitable at all, a rare solar eclipse just
days away, and a big starship update.
Speaker 2: Let's get into it so avery.
Speaker 1: As of this morning, the Crew twelve mission has now
been pushed back to no earlier than Friday, February thirteenth.
That is the third attempted launch date in less than
a week.
Speaker 2: It really is. Weather has been the culprit each time.
The teams originally had a window on Wednesday, eleventh, today,
but conditions along the Dragon spacecraft flight path just weren't cooperating,
so they waved it off. Then Thursday the twelfth got pushed.
Now they're looking at Friday morning with a planned lift
off at five point fifteen Eastern.
Speaker 1: And the reason there's so much urgency here isn't just
that people are impatient. The International Space Station is currently
running on what NASA is calling a skeleton crew. Preue
eleven had to come home early back in January following
a medical issue with one of the astronauts, and since
then the station has been significantly understaffed. Prue twelve is
the relief team.
Speaker 2: Which makes every weather delay feel a little more loaded
than usual. The people up there are doing the work
of a full crew with a much smaller team.
Speaker 1: So who's making this trip, Well, let's run through them
one more time. Commander is NASA astronaut Jessica Meyer, a
veteran of a previous long duration station mission and well
known for conducting the first all female spacewalk back in
twenty nineteen. Jill be joined by pilot Jack Hathaway, also
from NASA on his first spaceflight.
Speaker 2: And then there are two men specialists, Sophie Adnot from
the European Space Agency representing France and Andre Fedjaiyev from
Russia's ros Cosmos. This will be fed Jaiev's second trip
to the station. Once they dock, they're looking at an
eight to nine month stay, longer than usual to cover
the time loss by krue eleven's early departure.
Speaker 1: Now, there is a subplot to this mission that I
think a lot of people may not have heard about.
Back in December, Russia's ross Cosmos quietly removed cosmonaut aleg
Artemiev from the Crew twelve mission. The official line was
that he had transitioned to quote other work.
Speaker 2: Which is the kind of statement that immediately makes you
want to know what the actual reason is.
Speaker 1: Right and investigative outlet The Insider reported that Artemiev was
effectively expelled from the United States by a being accused
of violating international traffic in arms regulations by allegedly photographing
SpaceX engines, documents and other sense technologies with his phone
and then exporting that information.
Speaker 2: So he was allegedly taking photos insite SpaceX facilities of
proprietary rocket technology and sending it out of the country.
Speaker 1: That appears to be the allegation. He was replaced by
Andre Fadyeev and Ross. Cosmos has said very little publicly,
but it's a striking reminder that even in the cooperative
world of the International Space Station, the geopolitical tensions of
the wider world don't disappear at the door, and it
raises interesting questions about what access international partners are given
to commercial SpaceX facilities. These aren't NASA government sites anyway.
Speaker 3: The crew are in quarantine, the rocket is on the pad,
and all eyes are now on the Florida forecast for
Friday will update you the moment there's news.
Speaker 1: Our second story takes US to the outer Solar System,
where interstellar comet three I atlass is continuing its fair
way tour. And before it goes, it's been handing scientists
some truly unexpected data just to.
Speaker 2: Set the scene. Three I at Lists was discovered in
July twenty twenty five by a telescope in Chile, traveling
far too fast on a trajectory that could impossibly have
originated within our Solar System. It's only the third interstellar
object ever confirmed to have passed through, after Omuamua in
twenty seventeen and Borisov in twenty nineteen.
Speaker 1: Dasa's SPEARX telescope observed three I at Lists in December
twenty twenty five, and the results have been remarkable. The
comet's coma has become dramatically more active and chemically complex.
B REX detected water, ice, carbon dioxide, carbon monoxide, organic compounds,
and rocky material being ejected in chunks far larger than
the fine dust grains you'd normally expect. The scientists described
it as a cocktail of chemicals that haven't been exposed
to space for billions of years.
Speaker 2: The James Web Space telescope added another layer, finding that
the ratio of carbon dioxide to water in the coma
is approximately eight to one, which is one of the
highest CO two to water ratios ever measured in any comet.
In our solar systems, comets water tends to dominate, so
the implication is three i at lists may have formed
much further from its home star than a typical cometwood
near a CO two ice line. Its chemistry is essentially
telling us something about the architecture of the planetary system
it came from.
Speaker 1: There's also data on the comet spin. It rotates once
every sixteen point one six hours, and researchers found it
had strange wobbling jets in a rare sun facing anti tail.
Normally comet tails point away from the Sun, but three
i at lists briefly had one pointing toward it, genuinely
weird behavior.
Speaker 2: As of today, three iat list is in the con
installation Gemini, fading beyond naked eye visibility. It's heading towards
a Jupiter flyby in mid March before leaving the Solar
system forever, and there's one more data release to watch for.
Lisa's Juice spacecraft observed three iat lists back in November,
but couldn't transmit the data while using its antenna as
a heat shield. That data is expected to arrive here
on Earth anytime now in February, so there could still
be one more surprise.
Speaker 1: Coming when future generations ask what we learned about other
solar systems in twenty twenty five and twenty twenty six,
three I at lists is going to be a big
part of the answer.
Speaker 2: Dave travels three IY slash at lists. Don't be a stranger,
although I suppose by definition you always will be.
Speaker 1: Now, this next story is one I find genuinely fascinating
because it sits right at the intersection of robotics, artificial intelligence,
and the practical reality of exploring another planet. M NASA
handed the wheel of the Perseverance Mars rover to an AI,
not metaphorically literally, the AI generated the rovers driving waypoints,
and the rover followed them without human control across two
separate days, covering a total of four hundred and fifty
six meters.
Speaker 2: And just to be clear, this isn't NASA hopping on
a bandwagon. They have been working on autonomous rover navigation
for years out of sheer necessity. Mars is so far
away that a round trip radio signal takes around twenty
five minutes. That means every driving instruction you send has
a built in delay, and every unexpected obstacle requires another
twenty five minutes to respond to. Autonomous navigation isn't a luxury,
it's a practical requirement.
Speaker 1: So in this demonstration, the AI analyzed orbital images from
the Mars Reconnaissance orbiter's high rise camera as well as
digital elevation models. It identified how sand traps, boulder fields,
bedrock rocky outcrops, and then generated a path defined by
a series of waypoints to avoid them. From there, Perseverance's
own onboard auto navigation system took over to actually execute
the drive.
Speaker 4: And importantly, before those AI generated waypoints were sent to Mars,
they were tested here on Earth using Perseverance's engineering twin,
a full scale physical replica at JPL's Mars yard, So
this wasn't a blind experiment. There was a safety net
built in.
Speaker 1: The AI in question is built on Anthropics Claude, which
regular listeners may know as the same AI that helps
power this show. So there's a certain pleasing symmetry and
reporting on that it really is.
Speaker 2: And the engineers are excited about what comes next. One
of the current limitations is that the longer a rover
drives without human relocalization, essentially humans checking in to confirm
where it is on the map, the more positional uncertainty
build up. Over six hundred and fifty five meters, that
uncertainty can grow to around thirty three meters. The goal
is to use AI to solve that relocalization problem too,
so rovers can handle kilometer scaled drives entirely on their own.
Speaker 1: And beyond Mars. This matters for the whole future of
deep space exploration. NASA's Dragonfly mission to Saturn's moon Titan
will rely heavily on AI for autonomous navigation as it
flies around in Titan's thick atmosphere. The further from Earth
you go, the more critical autonomous systems become, because waiting
twenty five minutes for a signal is one thing, but
waiting hours or days is quite another.
Speaker 2: The vision the JPL team laid out is compelling intelligence
systems not just at mission control here on Earth, but
embedded in the rovers, helicopters, and drones themselves, trained on
the collective knowledge of NASA's engineers and scientists. The Mars
rover of twenty thirty five may look quite different from perseverance.
Speaker 1: Our next story is one of those pieces of research
that sounds almost philosophical at first, but turns out to
have very concrete scientific implications. A new study published in
Nature Astronomy has found that life on Earth may be
thanks to an extraordinarily lucky chemical accident during our planet's
formation nearly four point six billion years ago.
Speaker 2: And when they say lucky, they mean it. The research
suggests that two elements absolutely essential for life as we
know it, phosphorus and nitrogen, only stayed accessible on Earth's
surface because of a very precise and apparently quite rare
balance of oxygen during the planet's earliest formation.
Speaker 1: Here's how it works. When a young rocky planet forms,
it's initially molten, a churning ball of liquid rock. As
heavy metals sink inward to form the core. Lighter materials
stay near the surface during this chaotic stage called core formation.
The amount of oxygen present determines where other elements end up.
The researchers from Etch Zurich found that oxygen levels need
to fall within a surprisingly narrow range for both phosphorus
and nitrogen to remain in the mantle and crust available
for future life.
Speaker 3: To little oxygen and phosphorus bonds with iron and gets
dragged into the core, taking away a key ingredient for
DNA sell membranes and energy transfer. Too much oxygen and
nitrogen is more easily lost to space. Either way, the
chemistry needed for life never fully comes together. Earth hit
this sweet spot, what the researchers are calling a chemical
Goldilock zone precisely.
Speaker 1: The lead researcher, Craig Walton put it clearly, if Earth
had had just a little more or a little less
oxygen during core formation, there would not have been enough
phosphorus or nitrogen for the development of life. They also
modeled mar and found it likely had the wrong oxygen balance,
more phosphorus in the mantle than Earth but less nitrogen,
challenging conditions for life as we know it.
Speaker 2: This is a significant challenge to how we've traditionally thought
about the search for life. The habitable zone, the region
around a star where liquid water can exist on the surface,
has been our go to framework, but this research suggests
that even a planet in the perfect orbital position with
liquid water could be fundamentally incapable of supporting life if
its internal chemistry didn't form correctly.
Speaker 1: And here's the hopeful flip side. The oxygen conditions during
planetary formation are linked to the chemistry of the host
star itself, because planets form from the same material as
their stars, So in principle, by looking at stellar chemistry
we might be able to predict which planetary systems had
the right conditions from the start. Walton's advice for the
search look for solars systems with stars that resemble our
own sun.
Speaker 3: It makes the Earth feel even more special and the
universe feel a little more vast and empty. All right,
from the philosophical to the spectacular. In exactly one week's time,
on February seventeenth, an annular solar eclipse is going to
sweep across the Southern Hemisphere. This is the so called
ring of fire eclipse, where the Moon passes directly in
front of the Sun, but because it's at a slightly
greater distance from Earth than usual, it appears a little
smaller than the Sun's disk. The result is a thin,
blazing ring of sunlight surrounding the Moon's dark silhouette dunning.
Speaker 1: Though this is different from a total solar eclipse where
the Moon completely covers the Sun and you get that
eerie darkness in the middle of the day. In an
annular eclipse, the Moon blocks about ninety six percent of
the Sun's disk, but that remaining sliver stays visible and
the ring effect is only visible for around two minutes
and twenty seconds at any given location. In the past.
Speaker 2: The path of annularity for this one is quite remote.
It runs primarily over Antarctica, which means the full ring
of fire experience will be witnessed by the researchers at
places like Concordia Station, the French Italian outpost on the
Dome Sea plateau, and Myrni Station, the Russian base on
the Davis Sea coast. We're talking about teams of maybe
fifty to two hundred people, a very exclusive audience for
one of nature's best shows.
Speaker 1: For the rest of US, partial phases will be visible
from the southernmost parts of South America, southern Chile and Argentina,
and from parts of South Africa. Not the full ring,
but still a striking site if you're in the right
location with proper eclipse glasses. And it goes without saying
never look directly at the Sun during an eclipse without
approved eclipse glasses. The ring of fire does not mean
the sun is safe to look at.
Speaker 2: There's also something lovely about the timing of this eclipse.
February seventeenth is the start of Chinese New Year, specifically
the Year of the Fire Horse. The new moon that
causes the eclipse is the same new moon that marks
the beginning of the lunar new year, and the crescent
moon visible on February eighteenth will signal the start of Ramadan.
So this one celestial event sits right at the intersection
of multiple major cultural moments around the world.
Speaker 1: If you're not in the past and want to watch,
there will almost certainly be live streams from research teams
in Antarctica. We'll keep an eye out and link to
any good ones in the show notes. And we're going
to close out today's main stories with a Starship update,
because after a frustrating lull, things are very much moving
again at SpaceX's star Base facility in South Texas.
Speaker 2: Do understand why this is significant, you need a quick
bit of context. The last Starship flight, Flight eleven, was
the final launch of the Block two configuration. BaseX is
now transitioning to Block three, which is a significantly upgraded
architecture featuring new Raptor three engines, enhanced performance, and improved
reusability features. But the development of Block three hit a
serious setback when Booster eighteen, the first Block three booster,
failed during cryogenic pressure testing late last year. Its outer
container cracked.
Speaker 1: BaseX moved fast Booster nineteen. The replacement was stacked and
delivered to the test site in record time, and in
the first week of February it successfully completed not one
but two cryogenic pressure tests. The first was on February second,
the second on the fourth. Both passed Darbase watchers described
it as looking like the entire booster had frozen solid
as super chilled liquid oxygen entered it, which is exactly
what it's supposed to do.
Speaker 2: Booster nineteen has since been returned to the production site
for further work and all eyes are now on the
flight stack. Booster nineteen paired with Ship thirty nine, which
is being prepared for what will be the debut of
the full Block three vehicle. The current target is a
launch window in the February to March timeframe. THO sources
familiar with the program point to March as the most
realistic date.
Speaker 1: Flight twelve is a genuinely significant milestone. It'll be the
first flight of the Block three Starship, the first use
of the new Pad two architecture at Starbase, and the
debut of Raptor three engines at scale. The stakes are high.
NASA needs a successful Block three to progress towards using
Starship as the human landing system for the Artemis program's
crude lunar missions. That timeline is already under pressure.
Speaker 2: Meanwhile, infrastructure work continues at a remarkable pace. Pad one
at Starbase is being rebuilt, SpaceX's facility at Kennedy Space
Center at Launch Complex thirty nine A is progressing toward
a first Florida Starship launch in the second half of
twenty twenty six, and environmental approval has been granted for
a brand new Starship complex at Space Launch Complex thirty
seven at Cape Canaveral, which would eventually give the program
five launch pads across Texas and Florida.
Speaker 1: Five launch pads for Starship. It's a lot to take in,
but after Booster eighteen's failure and the testing lull, the
fact that Booster nineteen has passed its cryotests and Flight
twelve is back on track. Is genuinely good news for
the program.
Speaker 2: We will be watching closely.
Speaker 1: That is everything we've got for you today on Astronomy
Daily Fix stories, all of them worth your time. From
astronauts waiting for weather in Florida to a comet carrying
four billion year old secrets from another star, a rover
taking orders from an AI on Mars, new science that
makes life on Earth feel like a cosmic lottery win,
a ring of fire one week away, and starship dusting
itself off for another attempt at history.
Speaker 2: A genuinely brilliant day to be following Space news. Thank
you so much for spending part of it with us.
Speaker 1: If you enjoyed today's episode, please subscribe wherever you get
your podcasts, and if you want to go deeper on
any of these stories. Full show notes and our blog
are over at Astronomy Daily dot.
Speaker 2: Io until tomorrow. Keep looking up.
Speaker 1: Take care everyone, Sunny Day Stars
Speaker 4: Start all