Feb. 12, 2026

China Aces Lunar Abort Test, Viking Life Debate Reignited, and Hubble’s Dying Star

China Aces Lunar Abort Test, Viking Life Debate Reignited, and Hubble’s Dying Star
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China Aces Lunar Abort Test, Viking Life Debate Reignited, and Hubble’s Dying Star
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In today's episode of Astronomy Daily, Anna and Avery unpack six major space stories. China has achieved a crucial milestone in its crewed lunar programme, successfully testing the Mengzhou capsule's abort system at maximum dynamic pressure while also demonstrating SpaceX-style rocket recovery with the Long March 10 first stage. ULA's Vulcan Centaur rocket is set to launch its longest mission yet, delivering GSSAP space surveillance satellites directly to geosynchronous orbit for the US Space Force. We explain why NASA's Artemis 2 Moon mission has remarkably few launch opportunities — just 11 dates across March and April — and what orbital mechanics, solar power constraints, and hydrogen leaks have to do with it. In astronomy news, NASA's Hubble Space Telescope has produced its clearest image yet of the Egg Nebula, a pre-planetary nebula offering a rare glimpse of a Sun-like star in its death throes. A provocative new study in the journal Astrobiology argues that the 1976 Viking missions may have detected signs of Martian life after all, with perchlorates masking the organic signatures. And finally, astronomers continue searching for remnants of Comet C/2019 Y4 ATLAS, which spectacularly disintegrated during the 2020 pandemic — but may not be entirely gone. Timestamps [00:00] Introduction [01:30] China's Mengzhou capsule abort test & Long March 10 rocket recovery [05:30] ULA Vulcan USSF-87 launch — GSSAP satellites for Space Force [08:30] Artemis 2 launch windows — why only 11 chances in 2 months [11:30] Hubble's stunning Egg Nebula image — a dying star's final act [14:00] Did NASA's Viking missions find life on Mars? New evidence says maybe [16:30] The mystery of 'dead' Comet ATLAS — could fragments survive? [18:00] Sign-off


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Episode link: https://play.headliner.app/episode/31642585?utm_source=youtube

WEBVTT
Kind: captions
Language: en

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Good day and welcome to Astronomy Daily,


00:00:03.360 --> 00:00:05.510
your go-to source for everything


00:00:05.520 --> 00:00:08.230
happening in space and astronomy. I'm


00:00:08.240 --> 00:00:09.030
Anna


00:00:09.040 --> 00:00:11.509
>> and I'm Avery. It's Thursday, February


00:00:11.519 --> 00:00:14.390
the 12th, 2026, and we have a packed


00:00:14.400 --> 00:00:15.589
show for you today.


00:00:15.599 --> 00:00:18.470
>> We really do. China has just pulled off


00:00:18.480 --> 00:00:21.349
a major milestone in its push to land


00:00:21.359 --> 00:00:23.910
astronauts on the moon, including a


00:00:23.920 --> 00:00:26.390
pretty spectacular rocket splashdown


00:00:26.400 --> 00:00:28.790
that should have a few people at SpaceX


00:00:28.800 --> 00:00:31.509
paying attention. We've also got ULA's


00:00:31.519 --> 00:00:33.590
Vulcan Centaur rocket launching a pair


00:00:33.600 --> 00:00:35.590
of space surveillance satellites for the


00:00:35.600 --> 00:00:38.150
US Space Force, a deep dive into why


00:00:38.160 --> 00:00:41.110
Artemis 2 has so few chances to actually


00:00:41.120 --> 00:00:43.750
get off the ground, and a stunning new


00:00:43.760 --> 00:00:46.790
Hubble image of a dying star. Plus, did


00:00:46.800 --> 00:00:49.350
NASA's Viking missions actually find


00:00:49.360 --> 00:00:52.790
life on Mars 50 years ago? New research


00:00:52.800 --> 00:00:55.510
says the answer might be yes, and


00:00:55.520 --> 00:00:57.750
astronomers are still hunting for the


00:00:57.760 --> 00:00:59.990
remains of a comet that dramatically


00:01:00.000 --> 00:01:02.389
fell apart during CO lockdowns.


00:01:02.399 --> 00:01:05.030
>> Let's get into it. Our lead story today


00:01:05.040 --> 00:01:07.670
takes us to Wang Chong Space launch site


00:01:07.680 --> 00:01:10.469
on the island of Hainan where yesterday,


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February 11th, China conducted a


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landmark test that checked off multiple


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firsts in a single mission. This was a


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lowaltitude demonstration flight of


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China's next generation Long March 10


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rocket carrying the Mangjo crew capsule.


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And what they were testing was something


00:01:28.320 --> 00:01:31.670
called a Max Q abort. Basically, can the


00:01:31.680 --> 00:01:33.830
capsule safely escape the rocket at the


00:01:33.840 --> 00:01:36.149
moment of maximum aerodynamic stress


00:01:36.159 --> 00:01:37.350
during ascent?


00:01:37.360 --> 00:01:39.910
>> And for context, that's the point during


00:01:39.920 --> 00:01:42.069
any rocket launch where the vehicle is


00:01:42.079 --> 00:01:44.710
experiencing the greatest combination of


00:01:44.720 --> 00:01:47.429
speed and atmospheric resistance. If


00:01:47.439 --> 00:01:50.069
something goes wrong at max Q, the crew


00:01:50.079 --> 00:01:53.030
needs to get away fast. This was China's


00:01:53.040 --> 00:01:55.510
first ever test of that scenario with a


00:01:55.520 --> 00:01:58.389
crude class spacecraft. The capsule


00:01:58.399 --> 00:02:00.389
successfully separated from the rocket,


00:02:00.399 --> 00:02:02.149
deployed its parachutes, and was


00:02:02.159 --> 00:02:04.550
recovered at sea. It was carrying lunar


00:02:04.560 --> 00:02:06.550
space suits and test dummies rather than


00:02:06.560 --> 00:02:09.350
actual tyonuts, obviously, but the abort


00:02:09.360 --> 00:02:11.990
system performed exactly as designed.


00:02:12.000 --> 00:02:13.990
>> Now, here is where it gets really


00:02:14.000 --> 00:02:16.550
interesting, Avery. After the capsule


00:02:16.560 --> 00:02:19.589
separated, the Long March 10 first stage


00:02:19.599 --> 00:02:22.070
didn't just tumble into the ocean. It


00:02:22.080 --> 00:02:25.110
performed a powered vertical landing, a


00:02:25.120 --> 00:02:28.070
soft splashdown at sea, very much in the


00:02:28.080 --> 00:02:30.949
style of SpaceX's Falcon 9 booster


00:02:30.959 --> 00:02:32.070
recoveries.


00:02:32.080 --> 00:02:34.470
>> And that's a huge deal because until now


00:02:34.480 --> 00:02:36.229
only the United States has had


00:02:36.239 --> 00:02:38.390
operational reusable orbital class


00:02:38.400 --> 00:02:40.390
rockets. This was China's first


00:02:40.400 --> 00:02:42.630
successful rocket recovery attempt and


00:02:42.640 --> 00:02:44.630
it worked on the very first powered


00:02:44.640 --> 00:02:47.270
flight of the Long March 10 prototype.


00:02:47.280 --> 00:02:49.910
And they even had a dedicated autonomous


00:02:49.920 --> 00:02:52.710
recovery vessel called the Ling Hangzer


00:02:52.720 --> 00:02:55.270
standing by which is essentially China's


00:02:55.280 --> 00:02:58.470
answer to SpaceX's drone ships. The full


00:02:58.480 --> 00:03:01.110
Long March 10 is going to be an absolute


00:03:01.120 --> 00:03:03.509
beast when it's complete. A Tririccore


00:03:03.519 --> 00:03:06.229
rocket standing around 90 m tall with


00:03:06.239 --> 00:03:09.750
about 2700 tons of liftoff thrust. It's


00:03:09.760 --> 00:03:11.589
designed to be China's largest launch


00:03:11.599 --> 00:03:13.830
vehicle and the only one capable of


00:03:13.840 --> 00:03:16.390
sending both a crew spacecraft and a


00:03:16.400 --> 00:03:18.470
lunar lander to the moon in a single


00:03:18.480 --> 00:03:21.589
launch. If things continue at this pace,


00:03:21.599 --> 00:03:23.910
China is projecting a full orbital


00:03:23.920 --> 00:03:27.430
flight of the long march 10 by 2027 with


00:03:27.440 --> 00:03:30.070
tyonauts on the lunar surface before the


00:03:30.080 --> 00:03:32.550
end of the decade. That puts them in a


00:03:32.560 --> 00:03:34.949
very real race with NASA's Aremis


00:03:34.959 --> 00:03:37.030
program, which is targeting its own


00:03:37.040 --> 00:03:40.149
crude landing with Artemis 3 no earlier


00:03:40.159 --> 00:03:41.750
than 2028.


00:03:41.760 --> 00:03:43.589
>> And this test was conducted from the


00:03:43.599 --> 00:03:45.509
brand new launchpad number three in


00:03:45.519 --> 00:03:47.670
Wangchang, which was built specifically


00:03:47.680 --> 00:03:49.589
for these lunar missions. So, the


00:03:49.599 --> 00:03:51.910
infrastructure is going in alongside the


00:03:51.920 --> 00:03:54.789
hardware. A genuinely significant day


00:03:54.799 --> 00:03:57.110
for the Chinese space program and one


00:03:57.120 --> 00:03:59.270
that adds real momentum to what's


00:03:59.280 --> 00:04:01.750
shaping up to be the most exciting moon


00:04:01.760 --> 00:04:03.429
race since Apollo.


00:04:03.439 --> 00:04:05.190
>> Sticking with rockets, but moving to


00:04:05.200 --> 00:04:08.070
Cape Canaveral, ULA's Vulcan Centaur


00:04:08.080 --> 00:04:09.910
rocket is set to launch early this


00:04:09.920 --> 00:04:11.910
morning, February 12, with the window


00:04:11.920 --> 00:04:14.789
opening at 3:30 a.m. Eastern time.


00:04:14.799 --> 00:04:16.710
>> This is the fourth Vulcan mission


00:04:16.720 --> 00:04:19.909
overall and the first of 2026. The


00:04:19.919 --> 00:04:23.830
payload is a pair of GSSAP satellites.


00:04:23.840 --> 00:04:25.830
That's the geocynchronous space


00:04:25.840 --> 00:04:28.550
situational awareness program built by


00:04:28.560 --> 00:04:31.270
Northrop Grumman for the US Space Force.


00:04:31.280 --> 00:04:34.390
>> Think of GSSAP as a neighborhood watch


00:04:34.400 --> 00:04:36.950
program for geocynchronous orbit. These


00:04:36.960 --> 00:04:39.270
satellites monitor other spacecraft at


00:04:39.280 --> 00:04:42.390
that critical 35,000 km altitude,


00:04:42.400 --> 00:04:44.550
improving flight safety and giving Space


00:04:44.560 --> 00:04:46.629
Force operators better situational


00:04:46.639 --> 00:04:48.310
awareness about what's happening up


00:04:48.320 --> 00:04:51.030
there. There's also a secondary payload


00:04:51.040 --> 00:04:54.390
called Propulsive ESPA. Essentially, a


00:04:54.400 --> 00:04:56.550
training spacecraft that Space Force


00:04:56.560 --> 00:04:59.110
Guardians will use to practice precision


00:04:59.120 --> 00:05:01.270
orbital maneuvers and validate


00:05:01.280 --> 00:05:03.270
techniques for protecting assets in


00:05:03.280 --> 00:05:05.749
orbit. What's notable about this


00:05:05.759 --> 00:05:07.510
particular mission is that it's the


00:05:07.520 --> 00:05:10.310
longest Vulcan flight to date, nearly 10


00:05:10.320 --> 00:05:12.710
hours, because the Centaur upper stage


00:05:12.720 --> 00:05:15.189
is performing a direct insertion all the


00:05:15.199 --> 00:05:17.670
way to geocynchronous orbit rather than


00:05:17.680 --> 00:05:19.430
just dropping the satellites into a


00:05:19.440 --> 00:05:22.230
transfer orbit. ULA is under some


00:05:22.240 --> 00:05:24.469
pressure this year. They've got interm


00:05:24.479 --> 00:05:27.270
CEO John Elbon at the helm after Tory


00:05:27.280 --> 00:05:29.749
Bruno departed to join Blue Origin late


00:05:29.759 --> 00:05:33.270
last year and they're targeting 18 to 22


00:05:33.280 --> 00:05:36.629
launches in 2026 after falling short of


00:05:36.639 --> 00:05:39.189
their targets in 2025.


00:05:39.199 --> 00:05:40.629
>> They've invested heavily in


00:05:40.639 --> 00:05:42.870
infrastructure, a second mobile launch


00:05:42.880 --> 00:05:44.790
platform and a second integration


00:05:44.800 --> 00:05:47.110
facility at the Cape. So, the capacity


00:05:47.120 --> 00:05:49.749
is there. The question is whether Vulcan


00:05:49.759 --> 00:05:51.670
can deliver on the reliability and


00:05:51.680 --> 00:05:53.830
cadence that their roughly 80 mission


00:05:53.840 --> 00:05:55.510
backlog demands.


00:05:55.520 --> 00:05:57.830
>> We should note that ULA's webcast


00:05:57.840 --> 00:06:00.550
coverage will end at fairing separation


00:06:00.560 --> 00:06:03.270
about 5 minutes after launch because the


00:06:03.280 --> 00:06:05.430
classified nature of the payload means


00:06:05.440 --> 00:06:07.510
the rest of the mission is conducted in


00:06:07.520 --> 00:06:10.070
silence. Now, speaking of getting


00:06:10.080 --> 00:06:12.390
rockets off the ground, let's talk about


00:06:12.400 --> 00:06:14.629
Artemis 2. Because if you've been


00:06:14.639 --> 00:06:16.550
following the countdown to the first


00:06:16.560 --> 00:06:19.909
crude moon mission in over 50 years, you


00:06:19.919 --> 00:06:22.150
might have noticed something surprising


00:06:22.160 --> 00:06:24.790
about how few chances there actually are


00:06:24.800 --> 00:06:27.270
to launch. NASA has published the


00:06:27.280 --> 00:06:29.110
available launch dates and there are


00:06:29.120 --> 00:06:31.590
just 11 opportunities across March and


00:06:31.600 --> 00:06:34.550
April combined. Five dates in March, the


00:06:34.560 --> 00:06:37.430
6th through the 9th, plus March 11th,


00:06:37.440 --> 00:06:40.469
and six in April. Each window is about 2


00:06:40.479 --> 00:06:44.950
hours long. 11 chances in 61 days.


00:06:44.960 --> 00:06:47.029
That's it. And some of those could be


00:06:47.039 --> 00:06:49.590
lost to weather or the need to replace


00:06:49.600 --> 00:06:52.710
consumables like rocket fuel. So why so


00:06:52.720 --> 00:06:53.749
few?


00:06:53.759 --> 00:06:55.749
>> It all comes down to orbital mechanics


00:06:55.759 --> 00:06:57.590
and the specific requirements of this


00:06:57.600 --> 00:07:00.230
mission. Artemis 2 doesn't fly straight


00:07:00.240 --> 00:07:02.710
to the moon. The SLS rocket first


00:07:02.720 --> 00:07:05.110
delivers the Orion capsule to high Earth


00:07:05.120 --> 00:07:07.430
orbit where the crew and ground teams


00:07:07.440 --> 00:07:09.909
run through a series of checkouts. Then


00:07:09.919 --> 00:07:12.230
comes a trans lunar injection burn to


00:07:12.240 --> 00:07:14.230
send Orion on its way.


00:07:14.240 --> 00:07:17.110
>> So the launch time on any given day has


00:07:17.120 --> 00:07:20.150
to thread the needle. SLS needs to reach


00:07:20.160 --> 00:07:22.790
the right orbit. Orion needs to be in


00:07:22.800 --> 00:07:24.710
the correct alignment with both Earth


00:07:24.720 --> 00:07:26.629
and the moon for that trans lunar


00:07:26.639 --> 00:07:29.270
injection burn. And the whole trajectory


00:07:29.280 --> 00:07:32.070
has to work as a free return loop using


00:07:32.080 --> 00:07:34.390
the moon's gravity to sling the capsule


00:07:34.400 --> 00:07:35.029
home.


00:07:35.039 --> 00:07:37.350
>> And then there's a power constraint.


00:07:37.360 --> 00:07:39.589
Orion's solar arrays can't be in


00:07:39.599 --> 00:07:41.830
darkness for more than 90 minutes at a


00:07:41.840 --> 00:07:44.309
stretch. So NASA has to rule out any


00:07:44.319 --> 00:07:46.230
trajectory that would put the spacecraft


00:07:46.240 --> 00:07:49.029
in an extended eclipse. That alone


00:07:49.039 --> 00:07:51.510
eliminates a lot of potential dates.


00:07:51.520 --> 00:07:54.390
>> The return profile matters too. Orion


00:07:54.400 --> 00:07:56.629
needs a specific entry angle and


00:07:56.639 --> 00:07:58.790
conditions for splashdown. So that


00:07:58.800 --> 00:08:01.510
further narrows the field. Now, the


00:08:01.520 --> 00:08:03.189
reason we're talking about March and


00:08:03.199 --> 00:08:05.110
April specifically, is that the first


00:08:05.120 --> 00:08:07.270
wet dress rehearsal, that's the full


00:08:07.280 --> 00:08:09.430
practice run of fueling and countdown


00:08:09.440 --> 00:08:12.550
procedures, ended early on February 2nd,


00:08:12.560 --> 00:08:14.869
because of a liquid hydrogen leak that


00:08:14.879 --> 00:08:17.990
took February off the table entirely. A


00:08:18.000 --> 00:08:20.070
second wet dress attempt is expected


00:08:20.080 --> 00:08:22.869
soon, possibly this weekend. And NASA


00:08:22.879 --> 00:08:25.270
officials have been reassuring everyone


00:08:25.280 --> 00:08:27.350
that there are launch opportunities in


00:08:27.360 --> 00:08:29.909
every month beyond April as well. They


00:08:29.919 --> 00:08:32.230
just haven't published those dates yet.


00:08:32.240 --> 00:08:34.230
>> And it's worth remembering that Artemis


00:08:34.240 --> 00:08:37.110
1 had similar hydrogen leak issues and


00:08:37.120 --> 00:08:40.469
still flew successfully in late 2022. So


00:08:40.479 --> 00:08:42.949
this isn't uncharted territory.


00:08:42.959 --> 00:08:45.990
>> Whenever it flies, it'll be historic. No


00:08:46.000 --> 00:08:47.829
astronaut has been beyond low Earth


00:08:47.839 --> 00:08:51.990
orbit since Apollo 17 in December 1972.


00:08:52.000 --> 00:08:54.710
That's over 53 years.


00:08:54.720 --> 00:08:56.630
>> Moving on to our next story, and it's


00:08:56.640 --> 00:08:59.910
time for some pure cosmic beauty. NASA


00:08:59.920 --> 00:09:02.150
has released a breathtaking new image


00:09:02.160 --> 00:09:04.310
from the Hubble Space Telescope showing


00:09:04.320 --> 00:09:07.430
the Egg Nebula in extraordinary detail.


00:09:07.440 --> 00:09:09.590
The Egg Nebula is about a thousand


00:09:09.600 --> 00:09:11.509
lighty years away in the constellation


00:09:11.519 --> 00:09:14.070
Signis and it's what astronomers call a


00:09:14.080 --> 00:09:16.870
pre-planetary nebula which despite the


00:09:16.880 --> 00:09:18.949
name has nothing to do with planets


00:09:18.959 --> 00:09:21.590
forming. It's the early stage of a dying


00:09:21.600 --> 00:09:24.470
sunlike star shedding its outer layers.


00:09:24.480 --> 00:09:26.790
And NASA describes it as the first,


00:09:26.800 --> 00:09:28.949
youngest, and closest pre-planetary


00:09:28.959 --> 00:09:31.430
nebula ever discovered, which makes it


00:09:31.440 --> 00:09:33.430
incredibly valuable for studying how


00:09:33.440 --> 00:09:35.990
stars like our sun eventually meet their


00:09:36.000 --> 00:09:38.949
end. What makes this image so striking


00:09:38.959 --> 00:09:41.269
is the structure. At the center, you


00:09:41.279 --> 00:09:43.509
have the dying star, the yolk of the


00:09:43.519 --> 00:09:46.070
egg, hidden behind a dense cloud of


00:09:46.080 --> 00:09:49.190
dust. Quinn beams of light punch outward


00:09:49.200 --> 00:09:51.430
through gaps in that dusty shell,


00:09:51.440 --> 00:09:53.829
illuminating a series of concentric arcs


00:09:53.839 --> 00:09:56.790
of gas that ripple outward like waves.


00:09:56.800 --> 00:09:59.350
And unlike most nebula, which glow


00:09:59.360 --> 00:10:01.750
because their gas has been ionized, the


00:10:01.760 --> 00:10:04.470
Egg Nebula shines purely by reflected


00:10:04.480 --> 00:10:07.030
light from the central star. The star


00:10:07.040 --> 00:10:09.269
hasn't heated up enough yet to ionize


00:10:09.279 --> 00:10:11.430
its surroundings. That's what makes this


00:10:11.440 --> 00:10:14.230
a pre-planetary nebula rather than a


00:10:14.240 --> 00:10:16.949
full planetary nebula. The symmetry is


00:10:16.959 --> 00:10:19.269
remarkable, too. Scientists say the


00:10:19.279 --> 00:10:21.190
patterns are far too orderly to have


00:10:21.200 --> 00:10:22.870
come from a violent event like a


00:10:22.880 --> 00:10:25.509
supernova. Instead, they point to


00:10:25.519 --> 00:10:27.509
coordinated sputtering events in the


00:10:27.519 --> 00:10:30.150
carbonenenriched core of the dying star.


00:10:30.160 --> 00:10:32.389
Though the exact mechanism is still


00:10:32.399 --> 00:10:35.030
poorly understood, there's also evidence


00:10:35.040 --> 00:10:37.509
of gravitational interactions with one


00:10:37.519 --> 00:10:40.230
or more hidden companion stars buried


00:10:40.240 --> 00:10:42.389
deep within the dust, which may be


00:10:42.399 --> 00:10:43.990
helping to shape those dramatic


00:10:44.000 --> 00:10:47.430
outflows. This pre-planetary phase only


00:10:47.440 --> 00:10:50.389
lasts a few thousand years, an absolute


00:10:50.399 --> 00:10:52.949
blink in cosmic terms. So catching a


00:10:52.959 --> 00:10:55.110
nebula at this stage is like catching


00:10:55.120 --> 00:10:57.350
lightning in a bottle. And the material


00:10:57.360 --> 00:10:59.590
being shed here is the same kind of


00:10:59.600 --> 00:11:02.069
carbonri stardust that seated our own


00:11:02.079 --> 00:11:04.630
solar system 4 and a half billion years


00:11:04.640 --> 00:11:07.350
ago. Hubble has observed the Egg Nebula


00:11:07.360 --> 00:11:09.750
before, but this new image taken with


00:11:09.760 --> 00:11:12.389
the wide field camera 3 combines


00:11:12.399 --> 00:11:14.550
multiple data sets to produce the most


00:11:14.560 --> 00:11:17.750
detailed portrait yet. 35 years in orbit


00:11:17.760 --> 00:11:20.470
and Hubble is still delivering. Now for


00:11:20.480 --> 00:11:22.710
a story that could fundamentally change


00:11:22.720 --> 00:11:25.430
how we think about Mars. New research


00:11:25.440 --> 00:11:28.150
published in the journal Astrobiology is


00:11:28.160 --> 00:11:30.230
making the case that NASA's Viking


00:11:30.240 --> 00:11:32.470
missions may have actually detected


00:11:32.480 --> 00:11:35.990
signs of life on Mars back in 1976.


00:11:36.000 --> 00:11:37.750
We just didn't know how to read the


00:11:37.760 --> 00:11:38.710
data.


00:11:38.720 --> 00:11:41.350
>> This is a big claim, so let's unpack it.


00:11:41.360 --> 00:11:43.430
The Viking landers carried an instrument


00:11:43.440 --> 00:11:45.670
called the GCMS,


00:11:45.680 --> 00:11:47.750
the gas chromatography mass


00:11:47.760 --> 00:11:49.829
spectrometer, which was designed to


00:11:49.839 --> 00:11:52.069
detect organic molecules in the Martian


00:11:52.079 --> 00:11:54.710
soil. At the time, it returned what was


00:11:54.720 --> 00:11:57.030
interpreted as a negative result. No


00:11:57.040 --> 00:11:59.350
organics found. Case closed.


00:11:59.360 --> 00:12:01.350
>> And that conclusion essentially shut


00:12:01.360 --> 00:12:03.910
down the debate for decades. The Viking


00:12:03.920 --> 00:12:06.790
project scientist Gerald Soffen famously


00:12:06.800 --> 00:12:09.590
said, "No bodies, no life." And that


00:12:09.600 --> 00:12:11.590
became the textbook answer.


00:12:11.600 --> 00:12:15.030
>> But here's the twist. In 2008, NASA's


00:12:15.040 --> 00:12:17.350
Phoenix Lander discovered perchlorates


00:12:17.360 --> 00:12:19.990
in the Martian soil. Perchlorates are


00:12:20.000 --> 00:12:22.470
powerful oxidizing chemicals. And it


00:12:22.480 --> 00:12:24.470
turns out they break down organic


00:12:24.480 --> 00:12:26.870
molecules when heated, which is exactly


00:12:26.880 --> 00:12:29.829
what the Viking GCMS did to its soil


00:12:29.839 --> 00:12:33.430
samples. Though in 2010, astrobiologist


00:12:33.440 --> 00:12:36.389
Raphael Navaro Gonzalez showed that if


00:12:36.399 --> 00:12:38.790
you take organic material and heat it in


00:12:38.800 --> 00:12:40.790
the presence of perchlorate, you get


00:12:40.800 --> 00:12:43.350
methyl chloride and carbon dioxide,


00:12:43.360 --> 00:12:45.269
which is precisely the chemical


00:12:45.279 --> 00:12:47.509
signature that Viking detected and


00:12:47.519 --> 00:12:50.230
dismissed as either contamination or an


00:12:50.240 --> 00:12:52.069
unknown chemical process.


00:12:52.079 --> 00:12:54.550
>> Lead author Dr. Benner puts it very


00:12:54.560 --> 00:12:58.230
directly. The GCMS didn't fail to


00:12:58.240 --> 00:13:01.110
discover organics. It did discover them


00:13:01.120 --> 00:13:03.670
through their degradation products. We


00:13:03.680 --> 00:13:05.509
just didn't understand what we were


00:13:05.519 --> 00:13:06.230
looking at.


00:13:06.240 --> 00:13:08.310
>> The team has even developed a model for


00:13:08.320 --> 00:13:10.629
what Martian microbes might look like.


00:13:10.639 --> 00:13:13.590
They call it Barum. That's bacterial


00:13:13.600 --> 00:13:16.310
autoroes that respire with stored oxygen


00:13:16.320 --> 00:13:18.550
on Mars. The idea is that these


00:13:18.560 --> 00:13:20.629
organisms could photosynthesize during


00:13:20.639 --> 00:13:23.030
the Martian day, produce and store


00:13:23.040 --> 00:13:25.430
oxygen, then use it to survive the


00:13:25.440 --> 00:13:27.590
freezing Martian nights. I should


00:13:27.600 --> 00:13:30.069
emphasize this doesn't prove there's


00:13:30.079 --> 00:13:32.790
life on Mars, but it does reopen a door


00:13:32.800 --> 00:13:35.829
that was closed 50 years ago and makes a


00:13:35.839 --> 00:13:37.829
compelling case that the evidence was


00:13:37.839 --> 00:13:40.710
there all along hiding in plain sight.


00:13:40.720 --> 00:13:43.509
>> And it raises a fascinating question. If


00:13:43.519 --> 00:13:45.190
we go back to Mars with modern


00:13:45.200 --> 00:13:47.190
instruments designed with perchlorates


00:13:47.200 --> 00:13:49.829
in mind, what else might we find?


00:13:49.839 --> 00:13:52.069
>> Our final story today is a bit of a


00:13:52.079 --> 00:13:56.790
cosmic cold case. Remember comet C209 Y4


00:13:56.800 --> 00:13:57.910
Atlas?


00:13:57.920 --> 00:13:59.990
>> Oh, the pandemic comet. It was


00:14:00.000 --> 00:14:02.710
discovered in December 2019. And as it


00:14:02.720 --> 00:14:04.629
flew toward the inner solar system in


00:14:04.639 --> 00:14:07.670
early 2020, it brightened so rapidly


00:14:07.680 --> 00:14:09.509
that astronomers predicted it could


00:14:09.519 --> 00:14:11.910
become visible to the naked eye, a real


00:14:11.920 --> 00:14:13.509
lockdown spectacle.


00:14:13.519 --> 00:14:16.949
>> And then, like so many plans in 2020, it


00:14:16.959 --> 00:14:19.990
fell apart, literally. In late April


00:14:20.000 --> 00:14:22.069
2020, the comet dramatically


00:14:22.079 --> 00:14:24.870
disintegrated into dozens of pieces.


00:14:24.880 --> 00:14:26.949
Hubble tracked about 30 fragments


00:14:26.959 --> 00:14:29.110
grouped into a few clusters of icy


00:14:29.120 --> 00:14:31.990
debris. But here's the thing. A new


00:14:32.000 --> 00:14:34.230
study in the Astronomical Journal by a


00:14:34.240 --> 00:14:37.110
team led by Salvatore Cordova Kihano at


00:14:37.120 --> 00:14:39.509
Boston University has been asking if


00:14:39.519 --> 00:14:41.829
anything is still out there. Did the


00:14:41.839 --> 00:14:44.470
comet completely destroy itself or could


00:14:44.480 --> 00:14:47.030
a chunk have survived? The team scanned


00:14:47.040 --> 00:14:50.069
the skies in August and October of 2020


00:14:50.079 --> 00:14:52.310
using the Lowel Discovery Telescope in


00:14:52.320 --> 00:14:54.550
Arizona and the Zwicki Transient


00:14:54.560 --> 00:14:56.870
Facility, which surveys the entire


00:14:56.880 --> 00:14:59.430
northern sky every two nights. They


00:14:59.440 --> 00:15:02.790
found nothing. But, and this is the


00:15:02.800 --> 00:15:04.310
intriguing part, that doesn't


00:15:04.320 --> 00:15:06.710
necessarily mean there's nothing left.


00:15:06.720 --> 00:15:08.870
Their analysis suggests that a fragment


00:15:08.880 --> 00:15:11.269
up to about half a kilometer wide could


00:15:11.279 --> 00:15:13.750
still exist, but would be too small and


00:15:13.760 --> 00:15:15.590
too faint for those telescopes to


00:15:15.600 --> 00:15:18.470
detect. It could be out there right now,


00:15:18.480 --> 00:15:20.550
quietly tracing the comet's original


00:15:20.560 --> 00:15:22.470
orbit back toward the outer solar


00:15:22.480 --> 00:15:23.269
system.


00:15:23.279 --> 00:15:25.110
>> The researchers pose a really


00:15:25.120 --> 00:15:27.509
thoughtprovoking question. How many


00:15:27.519 --> 00:15:29.189
comets that we've assumed were


00:15:29.199 --> 00:15:31.829
completely destroyed might actually have


00:15:31.839 --> 00:15:34.069
surviving remnants still orbiting the


00:15:34.079 --> 00:15:36.550
sun? And there's a wonderful historical


00:15:36.560 --> 00:15:38.870
footnote here. Comet Atlas is believed


00:15:38.880 --> 00:15:41.189
to be a fragment of the same parent body


00:15:41.199 --> 00:15:44.629
as the great comet of 1844, which itself


00:15:44.639 --> 00:15:46.310
may have been visible to stone age


00:15:46.320 --> 00:15:49.110
civilizations about 5,000 years ago when


00:15:49.120 --> 00:15:51.030
it swept past the sun.


00:15:51.040 --> 00:15:53.829
>> So somewhere out there, a tiny piece of


00:15:53.839 --> 00:15:57.030
a 5,000-year-old cosmic traveler might


00:15:57.040 --> 00:15:58.949
still be making its lonely journey


00:15:58.959 --> 00:16:01.670
through the darkness. I find that oddly


00:16:01.680 --> 00:16:02.550
beautiful.


00:16:02.560 --> 00:16:05.110
>> Me, too. And the study serves as a heads


00:16:05.120 --> 00:16:07.350
up to astronomers. Next time a comet


00:16:07.360 --> 00:16:09.829
breaks apart, be ready to keep watching


00:16:09.839 --> 00:16:12.230
because the story might not be over.


00:16:12.240 --> 00:16:14.470
>> And that is your Astronomy Daily for


00:16:14.480 --> 00:16:18.310
Thursday, February 12th, 2026. What a


00:16:18.320 --> 00:16:21.110
lineup. From China's moon ambitions to


00:16:21.120 --> 00:16:23.749
Vikings longlost life clues. If you


00:16:23.759 --> 00:16:25.670
enjoyed the show, please do leave us a


00:16:25.680 --> 00:16:27.590
review on your podcast platform of


00:16:27.600 --> 00:16:29.430
choice. It really does help new


00:16:29.440 --> 00:16:31.829
listeners find us. And you can find full


00:16:31.839 --> 00:16:33.990
show notes, links to all our sources,


00:16:34.000 --> 00:16:37.189
and more at astronomyaily.io.


00:16:37.199 --> 00:16:39.509
>> For Avery and the whole Astronomy Daily


00:16:39.519 --> 00:16:41.749
team, I'm Anna. Keep looking up, and


00:16:41.759 --> 00:16:54.069
we'll see you tomorrow.


00:16:54.079 --> 00:16:57.880
Stories told.