Jan. 30, 2026

Io’s Record Eruption, Nuclear Space Future, and Ancient Mars Beaches

Io’s Record Eruption, Nuclear Space Future, and Ancient Mars Beaches
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Io’s Record Eruption, Nuclear Space Future, and Ancient Mars Beaches
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Witness the largest volcanic eruption ever seen on Jupiter's moon Io, explore NASA's breakthrough in nuclear propulsion, and discover evidence of ancient Martian beaches that could rewrite the story of life beyond Earth.

In this episode, we cover:

• NASA's Juno spacecraft captures a colossal 150-mile-high volcanic plume on Io

• KRUSTY nuclear reactor test paves the way for deep space exploration

• Ancient beach deposits in Gale Crater reveal Mars' watery past

• Artemis II communication networks ready for lunar missions

• The Moon's February celestial tour featuring Venus, Saturn, and Jupiter

• Life's chemical building blocks form naturally in interstellar space

Hosted by Anna and Avery, Astronomy Daily brings you the latest space and astronomy news in an engaging, accessible format perfect for enthusiasts and curious minds alike.

**Links & Resources:**

Visit astronomydaily.io for full articles, transcripts, and sources

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WEBVTT
Kind: captions
Language: en

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Picture this. A volcanic eruption so


00:00:03.840 --> 00:00:06.309
massive it could swallow entire [music]


00:00:06.319 --> 00:00:09.110
countries. Now imagine witnessing it


00:00:09.120 --> 00:00:12.870
from space on a moon 400 million miles


00:00:12.880 --> 00:00:15.030
away. Welcome to Astronomy [music]


00:00:15.040 --> 00:00:17.430
Daily where today we're bringing you the


00:00:17.440 --> 00:00:19.990
most explosive story from Jupiter's


00:00:20.000 --> 00:00:23.830
volcanic moon Io. Literally. I'm Anna.


00:00:23.840 --> 00:00:26.470
>> And I'm Avery. Anna, when NASA's Juno


00:00:26.480 --> 00:00:28.230
spacecraft captured [music] the largest


00:00:28.240 --> 00:00:31.189
volcanic eruption ever seen on Io, it


00:00:31.199 --> 00:00:33.110
reminded me why we explore [music] these


00:00:33.120 --> 00:00:35.270
distant worlds. The sheer scale of


00:00:35.280 --> 00:00:36.549
what's happening out there is


00:00:36.559 --> 00:00:37.990
mind-blowing. [music]


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Absolutely. And speaking of exploration,


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we've also got some groundbreaking news


00:00:43.440 --> 00:00:45.510
about nuclear propulsion [music] that


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could revolutionize deep space travel.


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Plus, discoveries about ancient Martian


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beaches, the communication networks


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keeping Artemis astronauts [music]


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connected around the moon, a lunar world


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tour happening in February, and


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fascinating research [music] about


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life's ingredients forming in space.


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It's Friday, [music] January 30th, 2026,


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and you're listening to Astronomy Daily.


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>> Let's get into it, then. Avery, [music]


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let's dive right into this spectacular


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volcanic eruption on Io. NASA's Juno


00:01:18.880 --> 00:01:20.710
spacecraft has been giving us


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unprecedented views of Jupiter's most


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volcanically active moon. And this


00:01:26.159 --> 00:01:29.670
latest discovery is absolutely stunning.


00:01:29.680 --> 00:01:32.789
>> It really is, Anna. During Juno's 71st


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close flyby of Jupiter on January 28th,


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the spacecraft captured what scientists


00:01:37.920 --> 00:01:40.069
are calling the largest volcanic


00:01:40.079 --> 00:01:42.789
eruption ever observed on Io. We're


00:01:42.799 --> 00:01:45.350
talking about a plume that's absolutely


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colossal in scale. The plume was spotted


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at a volcano called Khi. And here's what


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makes this so remarkable. The plume


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extends an estimated 240 km or about 150


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m above Io's surface.


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>> That's incredible. To put that in


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perspective for our listeners, that's


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roughly the distance from New York to


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Philadelphia. But instead of a road


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trip, we're talking about a volcanic


00:02:11.599 --> 00:02:14.710
plume shooting straight up into space.


00:02:14.720 --> 00:02:16.869
>> Exactly. And what makes Io such a


00:02:16.879 --> 00:02:19.430
volcanic powerhouse is the immense tidal


00:02:19.440 --> 00:02:21.990
forces it experiences. Jupender's


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massive gravity combined with the


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gravitational poles from its sister


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moons Europa and Ganymede literally


00:02:27.920 --> 00:02:30.550
flexes ISO's interior generating


00:02:30.560 --> 00:02:32.869
enormous amounts of heat. It's like


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continuously kneading dough but on a


00:02:35.040 --> 00:02:37.670
planetary scale. The images Juno


00:02:37.680 --> 00:02:40.630
captured are fascinating too. Scientists


00:02:40.640 --> 00:02:43.430
use the spacecraft's Juno cam instrument


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and what they saw was this enormous


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umbrellashaped plume extending from Cain


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Hackily. Scott Bolton, Juno's principal


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investigator from the Southwest Research


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Institute, described it as both enormous


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and incredibly faint, which is why these


00:02:59.200 --> 00:03:01.830
observations are so valuable.


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>> Right. And this isn't just about


00:03:03.440 --> 00:03:05.830
impressive visuals. Understanding is


00:03:05.840 --> 00:03:07.910
vcanism helps us learn about tidal


00:03:07.920 --> 00:03:09.670
heating processes throughout the solar


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system. Plus, Juno has been on quite the


00:03:12.400 --> 00:03:14.949
journey. The spacecraft has made 18


00:03:14.959 --> 00:03:17.110
close flybys of Io since entering


00:03:17.120 --> 00:03:19.910
Jupiter's orbit back in 2016, and it's


00:03:19.920 --> 00:03:21.910
scheduled to continue observations until


00:03:21.920 --> 00:03:23.990
at least 2025.


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>> Actually, Avery, we're now in 2026, so


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Juno has been extended beyond that


00:03:29.680 --> 00:03:31.990
original timeline, which is fantastic


00:03:32.000 --> 00:03:34.710
news for continued observations. This


00:03:34.720 --> 00:03:37.589
discovery really highlights how active


00:03:37.599 --> 00:03:40.550
and dynamic Io remains. It's not just


00:03:40.560 --> 00:03:43.110
the most volcanically active body in our


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solar system. It's constantly surprising


00:03:45.920 --> 00:03:48.710
us with the scale of its eruptions.


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>> Absolutely. And there's something almost


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poetic about witnessing such raw


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primordial forces at work on another


00:03:54.959 --> 00:03:57.350
world. While we deal with our relatively


00:03:57.360 --> 00:04:00.390
tame volcanic activity here on Earth, Io


00:04:00.400 --> 00:04:02.789
is experiencing eruptions that dwarf


00:04:02.799 --> 00:04:05.429
anything in our planet's history. It's a


00:04:05.439 --> 00:04:07.750
powerful reminder that our solar system


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is far from a static, quiet place. There


00:04:11.280 --> 00:04:13.270
are worlds out there where the geology


00:04:13.280 --> 00:04:15.750
is extreme beyond our everyday


00:04:15.760 --> 00:04:18.150
comprehension. All right, let's shift


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gears from volcanic fury to the cutting


00:04:20.880 --> 00:04:23.830
edge of space propulsion technology.


00:04:23.840 --> 00:04:25.430
>> Anna, if we're going to send humans


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deeper into the solar system to Mars and


00:04:27.680 --> 00:04:29.510
beyond, we need better propulsion


00:04:29.520 --> 00:04:31.749
systems than what we currently have.


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That's where nuclear technology comes


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in. And NASA just achieved a significant


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milestone.


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>> This is exciting stuff, Avery. NASA and


00:04:40.320 --> 00:04:42.710
the Department of Energy recently fired


00:04:42.720 --> 00:04:45.430
up crusty. And yes, that's actually the


00:04:45.440 --> 00:04:47.830
acronym they went with, which stands for


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kilo power reactor using sterling


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technology. This test represents a major


00:04:53.680 --> 00:04:55.909
step toward making nuclear power a


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reality for deep space missions.


00:04:58.560 --> 00:05:00.790
>> I love that acronym. But beyond the fun


00:05:00.800 --> 00:05:03.590
name, this is serious technology. Frosty


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is a small fish and reactor designed to


00:05:05.680 --> 00:05:07.670
provide reliable power in the harsh


00:05:07.680 --> 00:05:09.749
environments of deep space. We're


00:05:09.759 --> 00:05:11.270
talking about a system that could


00:05:11.280 --> 00:05:13.749
generate around 10 kows of electrical


00:05:13.759 --> 00:05:17.270
power continuously for over a decade. 10


00:05:17.280 --> 00:05:19.590
kow might not sound like much compared


00:05:19.600 --> 00:05:22.230
to a power plant, but in space it's


00:05:22.240 --> 00:05:24.469
transformational. That's enough to power


00:05:24.479 --> 00:05:26.469
life support systems, scientific


00:05:26.479 --> 00:05:29.189
instruments, and habitats on Mars or the


00:05:29.199 --> 00:05:31.670
moon. Traditional solar panels become


00:05:31.680 --> 00:05:33.670
less effective the farther you get from


00:05:33.680 --> 00:05:36.390
the sun, but nuclear reactors work


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anywhere.


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>> Exactly. And the technology behind


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Crusty is elegantly simple in concept if


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complex in execution. It uses a solid


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uranium core about the size of a paper


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towel roll. Nuclear fish in this core


00:05:50.080 --> 00:05:51.909
generates heat which is then converted


00:05:51.919 --> 00:05:54.710
to electricity using sterling engines.


00:05:54.720 --> 00:05:56.629
These are highly efficient engines that


00:05:56.639 --> 00:05:59.029
convert heat to mechanical energy and


00:05:59.039 --> 00:06:00.710
then to electricity.


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>> What I find particularly impressive is


00:06:03.280 --> 00:06:05.749
the safety engineering. These systems


00:06:05.759 --> 00:06:08.469
are designed to be inherently safe with


00:06:08.479 --> 00:06:10.469
passive cooling systems that don't


00:06:10.479 --> 00:06:12.950
require active intervention. During the


00:06:12.960 --> 00:06:15.510
Nevada test, engineers put Crusty


00:06:15.520 --> 00:06:18.070
through its paces, simulating various


00:06:18.080 --> 00:06:20.150
failure scenarios to prove it could


00:06:20.160 --> 00:06:22.309
handle extreme conditions.


00:06:22.319 --> 00:06:24.309
>> Right? And this isn't just theoretical


00:06:24.319 --> 00:06:25.990
anymore. The successful test


00:06:26.000 --> 00:06:28.309
demonstrates that the technology works.


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Now NASA's looking at scaling this up


00:06:30.720 --> 00:06:33.430
for actual mission use. Imagine a Mars


00:06:33.440 --> 00:06:35.510
base powered by one or more of these


00:06:35.520 --> 00:06:38.070
reactors providing consistent power


00:06:38.080 --> 00:06:40.790
regardless of dust storms, nighttime, or


00:06:40.800 --> 00:06:41.670
seasons.


00:06:41.680 --> 00:06:43.909
>> It also opens up possibilities for


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missions to the outer solar system.


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Places like Titan or Europa, where solar


00:06:49.039 --> 00:06:51.749
power is essentially useless, suddenly


00:06:51.759 --> 00:06:54.070
become more accessible with reliable


00:06:54.080 --> 00:06:56.390
nuclear power sources. We could have


00:06:56.400 --> 00:06:59.029
rovers or even submarines exploring


00:06:59.039 --> 00:07:01.430
these distant worlds. And let's not


00:07:01.440 --> 00:07:03.670
forget about nuclear thermal propulsion,


00:07:03.680 --> 00:07:05.990
which is related but different. That's


00:07:06.000 --> 00:07:08.070
where nuclear reactors heat propellant


00:07:08.080 --> 00:07:10.230
to generate thrust, potentially cutting


00:07:10.240 --> 00:07:12.950
Mars transit times in half. Between


00:07:12.960 --> 00:07:15.589
power generation and propulsion, nuclear


00:07:15.599 --> 00:07:17.749
technology could be the key to humanity


00:07:17.759 --> 00:07:19.510
becoming a truly space fairing


00:07:19.520 --> 00:07:20.629
civilization.


00:07:20.639 --> 00:07:22.469
>> It's one of those technologies that


00:07:22.479 --> 00:07:24.550
sounds like science fiction, but is


00:07:24.560 --> 00:07:27.029
rapidly becoming science fact. The


00:07:27.039 --> 00:07:28.950
crusty test proves we have the


00:07:28.960 --> 00:07:31.350
engineering capability. Now, it's about


00:07:31.360 --> 00:07:33.830
implementation and integration into


00:07:33.840 --> 00:07:36.150
actual mission architectures. Speaking


00:07:36.160 --> 00:07:38.629
of missions, let's head to Mars where


00:07:38.639 --> 00:07:40.710
scientists have discovered intriguing


00:07:40.720 --> 00:07:42.790
evidence of ancient water.


00:07:42.800 --> 00:07:44.790
>> Anna, one of the biggest questions about


00:07:44.800 --> 00:07:46.950
Mars is whether it ever had conditions


00:07:46.960 --> 00:07:49.270
suitable for life. Every time we find


00:07:49.280 --> 00:07:51.430
evidence of ancient water, we get closer


00:07:51.440 --> 00:07:53.430
to answering that question. And this


00:07:53.440 --> 00:07:55.510
latest discovery is particularly


00:07:55.520 --> 00:07:56.390
compelling.


00:07:56.400 --> 00:07:59.110
>> It really is, Avery. Researchers have


00:07:59.120 --> 00:08:00.710
identified what they believe to be


00:08:00.720 --> 00:08:03.189
ancient beach deposits in Mars Gale


00:08:03.199 --> 00:08:05.430
Crater, where the Curiosity rover has


00:08:05.440 --> 00:08:07.749
been exploring. These aren't just random


00:08:07.759 --> 00:08:10.230
rocks. They're sedimentary layers that


00:08:10.240 --> 00:08:13.110
tell a story of water lapping at ancient


00:08:13.120 --> 00:08:15.749
shorelines billions of years ago. The


00:08:15.759 --> 00:08:17.749
evidence comes from detailed analysis of


00:08:17.759 --> 00:08:19.189
rock formations that show


00:08:19.199 --> 00:08:21.189
characteristics consistent with beach


00:08:21.199 --> 00:08:22.950
environments. We're talking about


00:08:22.960 --> 00:08:25.510
specific grain sizes, layering patterns,


00:08:25.520 --> 00:08:27.749
and chemical signatures that match what


00:08:27.759 --> 00:08:29.589
we see in coastal deposits here on


00:08:29.599 --> 00:08:31.990
Earth. The team identified features like


00:08:32.000 --> 00:08:34.149
ripple marks and crossbedding that form


00:08:34.159 --> 00:08:36.550
when waves and currents move sediment.


00:08:36.560 --> 00:08:39.029
>> What makes this discovery particularly


00:08:39.039 --> 00:08:41.589
significant for habitability is that


00:08:41.599 --> 00:08:43.670
beach environments on Earth are


00:08:43.680 --> 00:08:46.389
incredibly productive ecosystems. The


00:08:46.399 --> 00:08:49.110
interface between water and land where


00:08:49.120 --> 00:08:52.150
you have tides, nutrients washing in,


00:08:52.160 --> 00:08:54.389
and varying conditions creates


00:08:54.399 --> 00:08:57.190
opportunities for diverse life forms.


00:08:57.200 --> 00:08:59.990
>> Exactly. If Mars had stable shorelines


00:09:00.000 --> 00:09:01.990
billions of years ago, those would have


00:09:02.000 --> 00:09:04.389
been prime locations for any potential


00:09:04.399 --> 00:09:06.870
Martian life to emerge and thrive.


00:09:06.880 --> 00:09:08.710
You've got water, you've got minerals


00:09:08.720 --> 00:09:10.870
being concentrated, you've got energy


00:09:10.880 --> 00:09:13.110
from the sun, all the ingredients that


00:09:13.120 --> 00:09:15.990
life needs. The research also helps us


00:09:16.000 --> 00:09:18.630
understand Mars's climate history. For


00:09:18.640 --> 00:09:21.670
beaches to exist, you need a stable body


00:09:21.680 --> 00:09:24.710
of water over extended periods, not just


00:09:24.720 --> 00:09:27.030
brief flooding events. This suggests


00:09:27.040 --> 00:09:29.590
that ancient Mars had a more earthlike


00:09:29.600 --> 00:09:31.910
hydraological cycle than we might have


00:09:31.920 --> 00:09:34.230
thought with lakes or seas that


00:09:34.240 --> 00:09:36.389
persisted long enough to create these


00:09:36.399 --> 00:09:37.670
coastal features.


00:09:37.680 --> 00:09:39.509
>> And the location in Gail Crater is


00:09:39.519 --> 00:09:41.670
significant, too. Curiosity has been


00:09:41.680 --> 00:09:43.670
slowly climbing Mount Sharp in the


00:09:43.680 --> 00:09:45.910
center of the crater. And as it climbs,


00:09:45.920 --> 00:09:47.829
it's essentially reading through Mars'


00:09:47.839 --> 00:09:50.550
geological history like pages in a book.


00:09:50.560 --> 00:09:52.790
These beach deposits fit into a broader


00:09:52.800 --> 00:09:55.030
narrative of a wetter, warmer ancient


00:09:55.040 --> 00:09:56.070
Mars.


00:09:56.080 --> 00:09:58.550
>> The implications for future missions are


00:09:58.560 --> 00:10:01.430
huge. If we can identify ancient beaches


00:10:01.440 --> 00:10:03.829
and shorelines, those become high


00:10:03.839 --> 00:10:06.150
priority targets for searching for bio


00:10:06.160 --> 00:10:08.630
signatures, chemical or physical


00:10:08.640 --> 00:10:11.350
evidence that life once existed. We


00:10:11.360 --> 00:10:13.509
might want to send future rovers, or


00:10:13.519 --> 00:10:15.670
even sample return missions to these


00:10:15.680 --> 00:10:16.710
locations.


00:10:16.720 --> 00:10:18.630
>> It's also worth noting how far we've


00:10:18.640 --> 00:10:20.949
come in our understanding of Mars. From


00:10:20.959 --> 00:10:23.190
a planet we once thought was completely


00:10:23.200 --> 00:10:25.509
dry and dead, we now know Mars had


00:10:25.519 --> 00:10:28.550
rivers, lakes, possibly oceans, beaches,


00:10:28.560 --> 00:10:31.269
and deltas. Each discovery adds another


00:10:31.279 --> 00:10:33.350
piece to the puzzle of what ancient Mars


00:10:33.360 --> 00:10:36.389
was really like. And who knows, maybe


00:10:36.399 --> 00:10:38.389
one day humans will walk on those


00:10:38.399 --> 00:10:41.350
ancient beaches 4 billion years after


00:10:41.360 --> 00:10:43.990
waves last touched them. But before we


00:10:44.000 --> 00:10:46.470
send humans to Mars, we need to perfect


00:10:46.480 --> 00:10:49.269
operations around the moon. Let's talk


00:10:49.279 --> 00:10:51.269
about the communication networks being


00:10:51.279 --> 00:10:53.430
prepared for Artemis 2.


00:10:53.440 --> 00:10:55.750
>> Anna, when the Artemis 2 crew ventures


00:10:55.760 --> 00:10:57.590
around the moon next year, they'll be


00:10:57.600 --> 00:10:59.670
farther from Earth than any humans have


00:10:59.680 --> 00:11:03.190
traveled since Apollo 17 in 1972.


00:11:03.200 --> 00:11:05.110
Keeping them connected requires an


00:11:05.120 --> 00:11:07.030
incredibly sophisticated network of


00:11:07.040 --> 00:11:09.190
ground stations and satellites.


00:11:09.200 --> 00:11:11.430
>> That's right, Avery. NASA has been


00:11:11.440 --> 00:11:13.829
building out what's essentially a cosmic


00:11:13.839 --> 00:11:16.150
communication infrastructure and the


00:11:16.160 --> 00:11:18.230
latest updates show that the networks


00:11:18.240 --> 00:11:20.470
are ready to support the mission. We're


00:11:20.480 --> 00:11:22.630
talking about the deep space network,


00:11:22.640 --> 00:11:24.790
the near space network, and even


00:11:24.800 --> 00:11:26.790
partnerships with commercial satellite


00:11:26.800 --> 00:11:29.110
operators. Let's break down what makes


00:11:29.120 --> 00:11:31.110
this so challenging. When the Orian


00:11:31.120 --> 00:11:33.509
craft carrying the Artemis 2 crew swings


00:11:33.519 --> 00:11:35.590
around the far side of the moon, there's


00:11:35.600 --> 00:11:37.670
a period where they're completely out of


00:11:37.680 --> 00:11:39.910
direct line of sight with Earth. No


00:11:39.920 --> 00:11:41.910
radio signals can reach them directly


00:11:41.920 --> 00:11:44.230
because the moon itself is in the way.


00:11:44.240 --> 00:11:46.550
>> That's where the tracking and data relay


00:11:46.560 --> 00:11:48.790
satellites come in. NASA has been


00:11:48.800 --> 00:11:51.269
upgrading the deep space network. Those


00:11:51.279 --> 00:11:54.069
massive dish antennas in California,


00:11:54.079 --> 00:11:56.470
Spain, and Australia that communicate


00:11:56.480 --> 00:11:59.030
with distant spacecraft. These dishes


00:11:59.040 --> 00:12:01.350
can pick up incredibly faint signals


00:12:01.360 --> 00:12:03.829
from the Oran capsule even when it's


00:12:03.839 --> 00:12:05.509
280,000


00:12:05.519 --> 00:12:08.389
m away. The redundancy built into the


00:12:08.399 --> 00:12:10.629
system is impressive, too. Multiple


00:12:10.639 --> 00:12:12.470
ground stations can track Orian


00:12:12.480 --> 00:12:14.629
simultaneously, ensuring that if one


00:12:14.639 --> 00:12:16.790
station loses signal due to weather or


00:12:16.800 --> 00:12:19.030
other issues, others can maintain


00:12:19.040 --> 00:12:21.269
contact. The crew will never be more


00:12:21.279 --> 00:12:22.710
than a few minutes without a


00:12:22.720 --> 00:12:25.269
communication link. What's particularly


00:12:25.279 --> 00:12:27.190
interesting is how much bandwidth


00:12:27.200 --> 00:12:29.190
they'll have. Unlike the Apollo


00:12:29.200 --> 00:12:31.269
missions, which had relatively limited


00:12:31.279 --> 00:12:33.829
voice communications, Artemis 2 will


00:12:33.839 --> 00:12:36.470
have highdefinition video capabilities,


00:12:36.480 --> 00:12:38.790
allowing mission control and the public


00:12:38.800 --> 00:12:41.829
to see what the crew sees in real time.


00:12:41.839 --> 00:12:44.470
Imagine watching HD footage of Earth


00:12:44.480 --> 00:12:47.030
rising over the lunar horizon as it


00:12:47.040 --> 00:12:48.150
happens.


00:12:48.160 --> 00:12:50.870
>> That's going to be spectacular. And it's


00:12:50.880 --> 00:12:52.389
not just about keeping the crew


00:12:52.399 --> 00:12:54.310
connected for safety, though that's


00:12:54.320 --> 00:12:56.310
obviously paramount. These


00:12:56.320 --> 00:12:58.790
communications enable realtime science


00:12:58.800 --> 00:13:01.430
operations, medical monitoring, and the


00:13:01.440 --> 00:13:03.509
kind of public engagement that makes


00:13:03.519 --> 00:13:06.389
these missions so inspiring. The testing


00:13:06.399 --> 00:13:09.350
that's been done is extensive, too. NASA


00:13:09.360 --> 00:13:11.750
has run countless simulations, putting


00:13:11.760 --> 00:13:13.829
the network through every conceivable


00:13:13.839 --> 00:13:16.470
scenario, from normal operations to


00:13:16.480 --> 00:13:19.030
emergency situations. They've verified


00:13:19.040 --> 00:13:21.269
that commands can be sent and received


00:13:21.279 --> 00:13:23.509
quickly enough to respond to any issues


00:13:23.519 --> 00:13:26.310
that might arise. And this network


00:13:26.320 --> 00:13:27.750
infrastructure they're building for


00:13:27.760 --> 00:13:30.310
Artemis will serve missions for decades


00:13:30.320 --> 00:13:32.790
to come. When we establish a permanent


00:13:32.800 --> 00:13:35.190
lunar base when we send astronauts to


00:13:35.200 --> 00:13:37.350
Mars, these same communication


00:13:37.360 --> 00:13:39.750
principles and much of the same hardware


00:13:39.760 --> 00:13:41.829
will be the backbone keeping everyone


00:13:41.839 --> 00:13:44.550
connected. It's a reminder that space


00:13:44.560 --> 00:13:47.110
exploration isn't just about rockets and


00:13:47.120 --> 00:13:49.190
spacecraft. It's about building the


00:13:49.200 --> 00:13:51.670
infrastructure to support human presence


00:13:51.680 --> 00:13:54.230
beyond Earth. Speaking of the moon,


00:13:54.240 --> 00:13:56.389
there's a beautiful celestial show


00:13:56.399 --> 00:13:58.470
coming up in February that everyone can


00:13:58.480 --> 00:13:59.829
enjoy from Earth.


00:13:59.839 --> 00:14:01.910
>> Anna, I love these monthly lunar


00:14:01.920 --> 00:14:04.310
highlights. February is shaping up to be


00:14:04.320 --> 00:14:06.389
a great month for lunar watchers with


00:14:06.399 --> 00:14:08.470
some beautiful planetary conjunctions


00:14:08.480 --> 00:14:11.110
and interesting phases to observe.


00:14:11.120 --> 00:14:13.350
>> Absolutely, Avery. Let's walk our


00:14:13.360 --> 00:14:15.509
listeners through what they can expect.


00:14:15.519 --> 00:14:17.430
The month kicks off with the moon in a


00:14:17.440 --> 00:14:19.910
waxing crescent phase. And on February


00:14:19.920 --> 00:14:22.069
1st and 2nd, we'll see a lovely


00:14:22.079 --> 00:14:24.389
conjunction with Venus. If you look to


00:14:24.399 --> 00:14:26.710
the western sky just after sunset,


00:14:26.720 --> 00:14:28.470
you'll see the bright crescent moon


00:14:28.480 --> 00:14:31.110
paired with the brilliant evening star.


00:14:31.120 --> 00:14:33.590
Venus is always stunning, and when you


00:14:33.600 --> 00:14:35.590
add the moon to the picture, it creates


00:14:35.600 --> 00:14:37.269
one of those scenes that makes even


00:14:37.279 --> 00:14:40.470
nonastronomers stop and look up. A few


00:14:40.480 --> 00:14:43.030
days later on February 4th, the moon


00:14:43.040 --> 00:14:45.350
will pass near Saturn, giving us another


00:14:45.360 --> 00:14:47.110
beautiful evening pairing.


00:14:47.120 --> 00:14:49.670
>> The full moon arrives on February 12th.


00:14:49.680 --> 00:14:51.509
And this one has a particularly


00:14:51.519 --> 00:14:53.910
evocative traditional name, the snow


00:14:53.920 --> 00:14:56.150
moon. Various cultures have called it


00:14:56.160 --> 00:14:58.389
the hunger moon or the storm moon,


00:14:58.399 --> 00:15:00.550
reflecting the harsh conditions of late


00:15:00.560 --> 00:15:02.790
winter in the northern hemisphere. Of


00:15:02.800 --> 00:15:04.310
course, the moon doesn't know what


00:15:04.320 --> 00:15:06.790
season it is down here, so the name is


00:15:06.800 --> 00:15:09.829
purely a human cultural addition. After


00:15:09.839 --> 00:15:12.389
full phase, the moon starts waning and


00:15:12.399 --> 00:15:14.230
this is when morning observers get their


00:15:14.240 --> 00:15:17.670
treats. On February 17th, early risers


00:15:17.680 --> 00:15:19.910
can catch the waning gibbus moon near


00:15:19.920 --> 00:15:21.829
the star Spika in the constellation


00:15:21.839 --> 00:15:25.189
Virgo. Then on February 20th, the moon


00:15:25.199 --> 00:15:27.350
makes a close approach to Jupiter, which


00:15:27.360 --> 00:15:29.350
will still be prominent in the pre-dawn


00:15:29.360 --> 00:15:32.150
sky. One of my favorite things to watch


00:15:32.160 --> 00:15:34.550
is how the moon appears to march across


00:15:34.560 --> 00:15:36.949
the sky from night to night, visiting


00:15:36.959 --> 00:15:39.670
different stars and planets. It's like a


00:15:39.680 --> 00:15:42.310
natural cosmic clock, and you don't need


00:15:42.320 --> 00:15:44.389
any equipment beyond your eyes to enjoy


00:15:44.399 --> 00:15:46.389
it. Though, binoculars definitely


00:15:46.399 --> 00:15:48.389
enhance the view. Speaking of


00:15:48.399 --> 00:15:50.790
binoculars, the waxing crescent phases


00:15:50.800 --> 00:15:52.629
early in the month are perfect for


00:15:52.639 --> 00:15:54.790
observing what astronomers call Earth


00:15:54.800 --> 00:15:57.030
shine. That's when you can see the dark


00:15:57.040 --> 00:15:59.350
portion of the moon, faintly illuminated


00:15:59.360 --> 00:16:01.910
by sunlight reflecting off Earth. It's


00:16:01.920 --> 00:16:04.550
this beautiful ghostly glow that reveals


00:16:04.560 --> 00:16:07.189
the entire disc. And for anyone


00:16:07.199 --> 00:16:09.590
interested in lunar photography, those


00:16:09.600 --> 00:16:11.509
conjunctions with Venus and Jupiter


00:16:11.519 --> 00:16:14.069
offer fantastic opportunities. You don't


00:16:14.079 --> 00:16:16.150
need expensive equipment. Even a


00:16:16.160 --> 00:16:18.069
smartphone can capture these scenes if


00:16:18.079 --> 00:16:19.829
you have steady hands or a simple


00:16:19.839 --> 00:16:23.030
tripod. The moon's February tour also


00:16:23.040 --> 00:16:25.189
serves as a nice reminder of celestial


00:16:25.199 --> 00:16:27.749
mechanics. Every conjunction, every


00:16:27.759 --> 00:16:29.749
phase we see is the result of the


00:16:29.759 --> 00:16:32.069
precise dance between the Earth, Moon,


00:16:32.079 --> 00:16:34.870
and Sun. The fact that we can predict


00:16:34.880 --> 00:16:36.949
exactly when these events will occur


00:16:36.959 --> 00:16:39.350
centuries in advance is a testament to


00:16:39.360 --> 00:16:42.230
our understanding of orbital dynamics.


00:16:42.240 --> 00:16:44.310
Though, mark your calendars, folks.


00:16:44.320 --> 00:16:47.269
February 1st and 2nd for Venus, February


00:16:47.279 --> 00:16:50.069
4th for Saturn, February 12th for the


00:16:50.079 --> 00:16:52.710
full snow moon, and February 20th for


00:16:52.720 --> 00:16:55.110
Jupiter. The moon is putting on a world


00:16:55.120 --> 00:16:58.310
tour, and admission is absolutely free.


00:16:58.320 --> 00:17:00.470
Now, let's wrap up with some fascinating


00:17:00.480 --> 00:17:02.389
research about the chemistry of life


00:17:02.399 --> 00:17:03.590
itself.


00:17:03.600 --> 00:17:05.990
>> Anna, one of the most profound questions


00:17:06.000 --> 00:17:08.949
in science is how life began. And new


00:17:08.959 --> 00:17:10.710
research is revealing that some of the


00:17:10.720 --> 00:17:12.870
key ingredients for life might form


00:17:12.880 --> 00:17:15.669
spontaneously in space without any need


00:17:15.679 --> 00:17:18.069
for planets or special conditions.


00:17:18.079 --> 00:17:20.390
>> This is absolutely fascinating research,


00:17:20.400 --> 00:17:22.870
Avery. Scientists have discovered that


00:17:22.880 --> 00:17:25.590
complex organic molecules, the building


00:17:25.600 --> 00:17:27.990
blocks of proteins and other biological


00:17:28.000 --> 00:17:30.390
molecules, can form in the harsh


00:17:30.400 --> 00:17:32.789
environment of interstellar space. We're


00:17:32.799 --> 00:17:35.270
not talking about life itself, but the


00:17:35.280 --> 00:17:38.070
chemical precursors that life needs,


00:17:38.080 --> 00:17:40.549
>> right? The study focused on amino acids,


00:17:40.559 --> 00:17:42.310
which are the fundamental components of


00:17:42.320 --> 00:17:45.270
proteins. On Earth, we know amino acids


00:17:45.280 --> 00:17:47.830
can form through biological processes.


00:17:47.840 --> 00:17:49.750
But this research shows they can also


00:17:49.760 --> 00:17:52.070
arise through purely chemical reactions


00:17:52.080 --> 00:17:55.190
in space in molecular clouds where stars


00:17:55.200 --> 00:17:57.270
and planets eventually form.


00:17:57.280 --> 00:17:59.029
>> What makes this possible is the


00:17:59.039 --> 00:18:01.029
chemistry happening on the surfaces of


00:18:01.039 --> 00:18:03.669
dust grains in these molecular clouds.


00:18:03.679 --> 00:18:05.909
These grains are coated with ices,


00:18:05.919 --> 00:18:08.710
frozen water, methane, ammonia, and


00:18:08.720 --> 00:18:11.430
other simple molecules. When cosmic rays


00:18:11.440 --> 00:18:14.470
or ultraviolet light hits these ices, it


00:18:14.480 --> 00:18:16.390
triggers chemical reactions that can


00:18:16.400 --> 00:18:18.789
build up more complex molecules.


00:18:18.799 --> 00:18:20.549
>> The researchers use laboratory


00:18:20.559 --> 00:18:22.789
simulations that recreate the conditions


00:18:22.799 --> 00:18:25.750
in space, extreme cold, vacuum, and


00:18:25.760 --> 00:18:28.230
radiation. They found that even without


00:18:28.240 --> 00:18:30.950
any biological input, amino acids and


00:18:30.960 --> 00:18:33.669
other organic molecules form readily.


00:18:33.679 --> 00:18:35.669
It's like space is running a giant


00:18:35.679 --> 00:18:37.510
chemistry experiment, and the products


00:18:37.520 --> 00:18:39.830
are the ingredients for life. This has


00:18:39.840 --> 00:18:42.710
huge implications for astrobiology. If


00:18:42.720 --> 00:18:45.110
life's building blocks form naturally in


00:18:45.120 --> 00:18:47.110
space, then they're probably common


00:18:47.120 --> 00:18:49.350
throughout the galaxy. When new star


00:18:49.360 --> 00:18:51.029
systems form from these molecular


00:18:51.039 --> 00:18:53.270
clouds, they inherit these organic


00:18:53.280 --> 00:18:55.830
molecules. Young planets get seated with


00:18:55.840 --> 00:18:57.669
the chemistry they need for life to


00:18:57.679 --> 00:18:59.029
potentially emerge.


00:18:59.039 --> 00:19:01.029
>> We've actually found evidence supporting


00:19:01.039 --> 00:19:03.350
this on Earth. Some meteorites,


00:19:03.360 --> 00:19:05.830
particularly carbonatous condrites,


00:19:05.840 --> 00:19:08.230
contain amino acids and other organic


00:19:08.240 --> 00:19:10.710
compounds that formed in space before


00:19:10.720 --> 00:19:13.350
the solar system even existed. When


00:19:13.360 --> 00:19:15.270
these meteorites fall to Earth, they


00:19:15.280 --> 00:19:17.430
deliver this prebiotic chemistry.


00:19:17.440 --> 00:19:19.430
>> It raises an interesting question about


00:19:19.440 --> 00:19:21.909
the origin of life on Earth. Did life


00:19:21.919 --> 00:19:24.310
arise entirely from scratch using


00:19:24.320 --> 00:19:26.870
molecules made here, or did it get a


00:19:26.880 --> 00:19:28.950
head start from organic compounds


00:19:28.960 --> 00:19:31.510
delivered by comets and asteroids? The


00:19:31.520 --> 00:19:34.150
answer might be both. A combination of


00:19:34.160 --> 00:19:37.270
homegrown chemistry and cosmic delivery.


00:19:37.280 --> 00:19:39.110
>> And when we search for life on other


00:19:39.120 --> 00:19:42.150
worlds, Mars, Europa, Enceladus,


00:19:42.160 --> 00:19:44.470
exoplanets, knowing that the basic


00:19:44.480 --> 00:19:46.710
ingredients are probably already there


00:19:46.720 --> 00:19:49.110
makes the question shift from could


00:19:49.120 --> 00:19:51.669
light's chemistry exist there to did


00:19:51.679 --> 00:19:53.669
conditions allow that chemistry to


00:19:53.679 --> 00:19:54.950
become biology.


00:19:54.960 --> 00:19:56.870
>> The research also highlights how


00:19:56.880 --> 00:19:58.950
interconnected everything in the


00:19:58.960 --> 00:20:01.350
universe is. The same processes that


00:20:01.360 --> 00:20:04.230
create stars and planets also create the


00:20:04.240 --> 00:20:06.710
molecules necessary for life. We're


00:20:06.720 --> 00:20:09.190
literally made of stardust, but we're


00:20:09.200 --> 00:20:11.110
also made of chemistry that happens


00:20:11.120 --> 00:20:12.470
between the stars.


00:20:12.480 --> 00:20:14.950
>> It's humbling and inspiring at the same


00:20:14.960 --> 00:20:17.430
time. The universe isn't just capable of


00:20:17.440 --> 00:20:20.310
creating stars and galaxies. It's also a


00:20:20.320 --> 00:20:22.549
place where the precursors to life form


00:20:22.559 --> 00:20:24.390
naturally, waiting for the right


00:20:24.400 --> 00:20:26.150
conditions to spark something


00:20:26.160 --> 00:20:28.310
extraordinary. Which brings us full


00:20:28.320 --> 00:20:31.590
circle to why we explore. Every mission,


00:20:31.600 --> 00:20:34.230
every observation, every discovery adds


00:20:34.240 --> 00:20:36.070
to our understanding not just of the


00:20:36.080 --> 00:20:38.390
universe, but our place in it and the


00:20:38.400 --> 00:20:40.549
processes that made us possible.


00:20:40.559 --> 00:20:42.549
>> What a journey we've taken today, Anna.


00:20:42.559 --> 00:20:45.350
From explosive vulcanism on Io to the


00:20:45.360 --> 00:20:47.350
chemistry of life forming in the depths


00:20:47.360 --> 00:20:49.750
of space. It's been a packed episode.


00:20:49.760 --> 00:20:51.909
>> It really has, Avery. We've covered


00:20:51.919 --> 00:20:54.230
groundbreaking propulsion technology,


00:20:54.240 --> 00:20:56.789
ancient Martian beaches, cuttingedge


00:20:56.799 --> 00:20:58.950
communications for Aremis, and a


00:20:58.960 --> 00:21:01.190
beautiful lunar tour to look forward to.


00:21:01.200 --> 00:21:03.350
If today's episode shows us anything,


00:21:03.360 --> 00:21:05.350
it's that the universe never stops


00:21:05.360 --> 00:21:07.830
surprising us. Before we sign off, a


00:21:07.840 --> 00:21:09.590
quick reminder that you can find all the


00:21:09.600 --> 00:21:11.350
links to the stories we discussed today


00:21:11.360 --> 00:21:13.510
in our show notes. And if you enjoyed


00:21:13.520 --> 00:21:15.029
this episode, please share it with


00:21:15.039 --> 00:21:17.110
someone who loves space as much as you


00:21:17.120 --> 00:21:20.230
do. You can find us on all major podcast


00:21:20.240 --> 00:21:22.870
platforms and we're also on YouTube if


00:21:22.880 --> 00:21:25.190
you prefer to watch. We're @


00:21:25.200 --> 00:21:27.990
astroailyaily pod on social media and


00:21:28.000 --> 00:21:29.830
you can visit our website at


00:21:29.840 --> 00:21:31.750
astronomyaily.io


00:21:31.760 --> 00:21:34.470
for articles, transcripts, and more.


00:21:34.480 --> 00:21:37.590
Astronomy [music] day.


00:21:37.600 --> 00:21:45.590
Stories be told.


00:21:45.600 --> 00:21:53.935
Stories to tell.


00:21:53.945 --> 00:21:55.965
[singing]