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


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.
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Kind: captions
Language: en
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Picture this. A volcanic eruption so
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massive it could swallow entire [music]
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countries. Now imagine witnessing it
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from space on a moon 400 million miles
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away. Welcome to Astronomy [music]
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Daily where today we're bringing you the
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most explosive story from Jupiter's
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volcanic moon Io. Literally. I'm Anna.
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>> And I'm Avery. Anna, when NASA's Juno
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spacecraft captured [music] the largest
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volcanic eruption ever seen on Io, it
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reminded me why we explore [music] these
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distant worlds. The sheer scale of
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what's happening out there is
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mind-blowing. [music]
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Absolutely. And speaking of exploration,
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we've also got some groundbreaking news
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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
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spacecraft has been giving us
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unprecedented views of Jupiter's most
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volcanically active moon. And this
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latest discovery is absolutely stunning.
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>> 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
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are calling the largest volcanic
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eruption ever observed on Io. We're
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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
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plume shooting straight up into space.
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>> Exactly. And what makes Io such a
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volcanic powerhouse is the immense tidal
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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
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flexes ISO's interior generating
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enormous amounts of heat. It's like
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continuously kneading dough but on a
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planetary scale. The images Juno
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captured are fascinating too. Scientists
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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
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observations are so valuable.
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>> Right. And this isn't just about
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impressive visuals. Understanding is
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vcanism helps us learn about tidal
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heating processes throughout the solar
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system. Plus, Juno has been on quite the
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journey. The spacecraft has made 18
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close flybys of Io since entering
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Jupiter's orbit back in 2016, and it's
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scheduled to continue observations until
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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
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original timeline, which is fantastic
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news for continued observations. This
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discovery really highlights how active
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and dynamic Io remains. It's not just
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the most volcanically active body in our
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solar system. It's constantly surprising
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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
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world. While we deal with our relatively
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tame volcanic activity here on Earth, Io
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is experiencing eruptions that dwarf
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anything in our planet's history. It's a
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powerful reminder that our solar system
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is far from a static, quiet place. There
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are worlds out there where the geology
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is extreme beyond our everyday
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comprehension. All right, let's shift
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gears from volcanic fury to the cutting
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edge of space propulsion technology.
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>> Anna, if we're going to send humans
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deeper into the solar system to Mars and
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beyond, we need better propulsion
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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
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the Department of Energy recently fired
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up crusty. And yes, that's actually the
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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
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step toward making nuclear power a
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reality for deep space missions.
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>> I love that acronym. But beyond the fun
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name, this is serious technology. Frosty
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is a small fish and reactor designed to
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provide reliable power in the harsh
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environments of deep space. We're
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talking about a system that could
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generate around 10 kows of electrical
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power continuously for over a decade. 10
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kow might not sound like much compared
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to a power plant, but in space it's
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transformational. That's enough to power
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life support systems, scientific
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instruments, and habitats on Mars or the
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moon. Traditional solar panels become
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less effective the farther you get from
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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
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generates heat which is then converted
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to electricity using sterling engines.
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These are highly efficient engines that
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convert heat to mechanical energy and
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then to electricity.
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>> What I find particularly impressive is
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the safety engineering. These systems
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are designed to be inherently safe with
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passive cooling systems that don't
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require active intervention. During the
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Nevada test, engineers put Crusty
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through its paces, simulating various
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failure scenarios to prove it could
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handle extreme conditions.
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>> Right? And this isn't just theoretical
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anymore. The successful test
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demonstrates that the technology works.
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Now NASA's looking at scaling this up
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for actual mission use. Imagine a Mars
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base powered by one or more of these
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reactors providing consistent power
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regardless of dust storms, nighttime, or
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seasons.
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>> 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
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power is essentially useless, suddenly
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become more accessible with reliable
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nuclear power sources. We could have
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rovers or even submarines exploring
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these distant worlds. And let's not
00:07:01.440 --> 00:07:03.670
forget about nuclear thermal propulsion,
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which is related but different. That's
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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
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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
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sounds like science fiction, but is
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rapidly becoming science fact. The
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crusty test proves we have the
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engineering capability. Now, it's about
00:07:31.360 --> 00:07:33.830
implementation and integration into
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actual mission architectures. Speaking
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of missions, let's head to Mars where
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scientists have discovered intriguing
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evidence of ancient water.
00:07:42.800 --> 00:07:44.790
>> Anna, one of the biggest questions about
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Mars is whether it ever had conditions
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suitable for life. Every time we find
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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
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compelling.
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>> It really is, Avery. Researchers have
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identified what they believe to be
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ancient beach deposits in Mars Gale
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Crater, where the Curiosity rover has
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been exploring. These aren't just random
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rocks. They're sedimentary layers that
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tell a story of water lapping at ancient
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shorelines billions of years ago. The
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evidence comes from detailed analysis of
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rock formations that show
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characteristics consistent with beach
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environments. We're talking about
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specific grain sizes, layering patterns,
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and chemical signatures that match what
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we see in coastal deposits here on
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Earth. The team identified features like
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ripple marks and crossbedding that form
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when waves and currents move sediment.
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>> What makes this discovery particularly
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significant for habitability is that
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beach environments on Earth are
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incredibly productive ecosystems. The
00:08:46.399 --> 00:08:49.110
interface between water and land where
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you have tides, nutrients washing in,
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and varying conditions creates
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opportunities for diverse life forms.
00:08:57.200 --> 00:08:59.990
>> Exactly. If Mars had stable shorelines
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billions of years ago, those would have
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been prime locations for any potential
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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
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understand Mars's climate history. For
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beaches to exist, you need a stable body
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of water over extended periods, not just
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brief flooding events. This suggests
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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
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Mars.
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>> The implications for future missions are
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huge. If we can identify ancient beaches
00:10:01.440 --> 00:10:03.829
and shorelines, those become high
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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
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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
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farther from Earth than any humans have
00:10:59.680 --> 00:11:03.190
traveled since Apollo 17 in 1972.
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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
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building out what's essentially a cosmic
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communication infrastructure and the
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latest updates show that the networks
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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]




