00:00:00 --> 00:00:02 Avery: Hey, everyone, and welcome to Astronomy
00:00:02 --> 00:00:03 Daily. I'm Avery.
00:00:03 --> 00:00:06 Anna: And I'm Anna. We're here to bring you the
00:00:06 --> 00:00:08 most exciting space news and discoveries
00:00:08 --> 00:00:10 from around the universe.
00:00:10 --> 00:00:13 Avery: And wow, do we have some incredible stories
00:00:13 --> 00:00:15 for you today. We're talking about surprising
00:00:15 --> 00:00:18 discoveries on Mars that could reshape our
00:00:18 --> 00:00:20 understanding of the Red Planet's past.
00:00:20 --> 00:00:22 Dramatic developments in the new space race,
00:00:22 --> 00:00:25 with Russia announcing ambitious plans
00:00:25 --> 00:00:28 to challenge SpaceX, a, uh, major exoplanet
00:00:28 --> 00:00:31 milestone that brings us closer than ever to
00:00:31 --> 00:00:34 finding Earth's twin. Groundbreaking research
00:00:34 --> 00:00:36 on how ancient asteroid impacts might have
00:00:36 --> 00:00:39 actually helped life flourish on Earth. And
00:00:39 --> 00:00:41 some exciting updates on upcoming Mars
00:00:41 --> 00:00:43 missions. Plus, we'll dive into what all of
00:00:43 --> 00:00:45 this means for the future of space
00:00:45 --> 00:00:47 exploration and our search for life beyond
00:00:47 --> 00:00:48 Earth.
00:00:48 --> 00:00:50 Anna: That's right, Avery. It's been an
00:00:50 --> 00:00:53 absolutely fascinating week in space
00:00:53 --> 00:00:56 science news. So let's dive right in with our
00:00:56 --> 00:00:58 first story. And this one's coming from Mars
00:00:59 --> 00:01:01 with a discovery that has scientists
00:01:01 --> 00:01:04 rethinking the Red Planet's atmospheric
00:01:04 --> 00:01:04 history.
00:01:04 --> 00:01:07 Avery: Scientists have just discovered an unexpected
00:01:07 --> 00:01:10 ozone surge in Mars's polar vortex during
00:01:10 --> 00:01:13 winter. And this is honestly mind blowing
00:01:13 --> 00:01:14 when you think about the implications.
00:01:14 --> 00:01:17 Anna: It really is. So here's what's happening.
00:01:17 --> 00:01:19 During Mars's polar winter,
00:01:20 --> 00:01:22 temperatures plummet to a bone chilling
00:01:22 --> 00:01:25 -148 degrees Celsius.
00:01:25 --> 00:01:27 That's colder than the surface of Titan,
00:01:28 --> 00:01:30 Saturn's Moon. At these extreme temperatures,
00:01:30 --> 00:01:33 there's virtually no ultraviolet light from
00:01:33 --> 00:01:36 the sun to break down water vapor. Because
00:01:36 --> 00:01:39 Mars is tilted at 25 degrees,
00:01:39 --> 00:01:42 very similar to Earth's 23.5 degree
00:01:42 --> 00:01:45 tilt, this allows ozone to accumulate in
00:01:45 --> 00:01:48 ways we've never seen before. What makes
00:01:48 --> 00:01:51 this discovery even more remarkable is that
00:01:51 --> 00:01:53 researchers used data from the European Space
00:01:53 --> 00:01:56 Agency's Trace Gas Orbiter, which has been
00:01:56 --> 00:01:59 studying Mars's atmosphere since 2016.
00:02:00 --> 00:02:02 The readings showed ozone concentrations that
00:02:02 --> 00:02:04 were completely unexpected.
00:02:04 --> 00:02:06 Avery: And the big story here is what this tells us
00:02:06 --> 00:02:09 about Mars past. Dr. Kevin Olson from
00:02:09 --> 00:02:11 Oxford University presented this research at
00:02:11 --> 00:02:14 the europlanet Science Congress. And he's
00:02:14 --> 00:02:16 suggesting that Mars might have once had a
00:02:16 --> 00:02:19 protective ozone layer similar to Earth's.
00:02:19 --> 00:02:22 Anna: Exactly. And if Mars had a substantial
00:02:22 --> 00:02:24 ozone layer in its ancient past, that would
00:02:24 --> 00:02:26 have shielded the planet from harmful
00:02:26 --> 00:02:29 radiation, making it much more suitable for
00:02:29 --> 00:02:31 life as we know it. Think about this.
00:02:31 --> 00:02:34 Earth's ozone layer blocks about 97
00:02:34 --> 00:02:37 to 99% of, uh, the Sun's harmful
00:02:37 --> 00:02:40 ultraviolet radiation. Without it,
00:02:40 --> 00:02:42 life on our planet's surface would be
00:02:42 --> 00:02:45 impossible. So if ancient Mars had similar
00:02:45 --> 00:02:47 protection, we're talking about a
00:02:47 --> 00:02:50 fundamentally different world than the
00:02:50 --> 00:02:52 radiation blasted desert we see today. It's
00:02:52 --> 00:02:55 another piece of the puzzle in understanding
00:02:55 --> 00:02:57 whether Mars could have supported life
00:02:57 --> 00:03:00 billions of years ago. And here's something
00:03:00 --> 00:03:03 fascinating. This discovery also helps
00:03:03 --> 00:03:05 explain some of the chemical signatures we've
00:03:05 --> 00:03:07 been finding in Martian rocks and soil
00:03:07 --> 00:03:08 samples.
00:03:08 --> 00:03:10 Avery: You know, this ozone discovery becomes even
00:03:10 --> 00:03:12 more exciting when we consider what's
00:03:12 --> 00:03:14 happening with Mars exploration right now.
00:03:14 --> 00:03:17 NASA's Perseverance rover is still collecting
00:03:17 --> 00:03:19 samples in Jacero Crater, samples that could
00:03:19 --> 00:03:22 contain evidence of, uh, ancient microbial
00:03:22 --> 00:03:24 life. And with this new understanding of
00:03:24 --> 00:03:26 Mars's potential protective ozone layer,
00:03:26 --> 00:03:29 those samples become even more valuable. We
00:03:29 --> 00:03:31 might be looking at rocks that formed during
00:03:31 --> 00:03:33 a time when Mars was much more habitable than
00:03:33 --> 00:03:34 we previously thought.
00:03:35 --> 00:03:37 Speaking of space developments, our next
00:03:37 --> 00:03:39 story takes us from scientific discovery to
00:03:39 --> 00:03:42 geopolitics. Russia is making a major
00:03:42 --> 00:03:44 move to challenge SpaceX's dominance in
00:03:44 --> 00:03:45 satellite Internet.
00:03:45 --> 00:03:48 Anna: That's right. Dmitry Bakhanov from
00:03:48 --> 00:03:51 Roscosmos has confirmed that Russia is
00:03:51 --> 00:03:53 developing its own satellite Internet
00:03:53 --> 00:03:56 constellation called Sphere, to compete
00:03:56 --> 00:03:59 directly with Starlink. They're planning to
00:03:59 --> 00:04:01 launch the first batch of satellites later
00:04:01 --> 00:04:03 this year using their Soyuz 2 rockets.
00:04:04 --> 00:04:07 What's particularly interesting is that
00:04:07 --> 00:04:09 Russia is partnering with several countries,
00:04:09 --> 00:04:12 including Iran and North Korea, to develop
00:04:12 --> 00:04:14 this system. The project has been in
00:04:14 --> 00:04:17 development since 2018, but the Ukraine
00:04:17 --> 00:04:19 conflict has really accelerated their
00:04:19 --> 00:04:20 timeline.
00:04:20 --> 00:04:22 Avery: The scale is ambitious. We're talking about
00:04:22 --> 00:04:25 over 900 satellites planned by
00:04:25 --> 00:04:27 2035, with commercial services expected
00:04:28 --> 00:04:30 to begin in 2027. To put this
00:04:30 --> 00:04:33 in perspective, SpaceX currently has over
00:04:33 --> 00:04:36 5 Starlink satellites in orbit and is
00:04:36 --> 00:04:38 planning for up to 42 eventually.
00:04:39 --> 00:04:40 But here's the thing that makes this
00:04:40 --> 00:04:43 particularly interesting. This isn't just
00:04:43 --> 00:04:46 about market competition. Russia's Sphere
00:04:46 --> 00:04:47 constellation will operate in different
00:04:47 --> 00:04:50 orbital shells, including some in higher
00:04:50 --> 00:04:52 elliptical orbits that could provide coverage
00:04:52 --> 00:04:54 to polar regions better than Starlink's
00:04:54 --> 00:04:57 current configuration. The technical approach
00:04:57 --> 00:04:59 is actually quite clever, even if the scale
00:04:59 --> 00:05:00 is smaller.
00:05:00 --> 00:05:02 Anna: Right. There's definitely a geopolitical
00:05:02 --> 00:05:05 element here. Ukraine's successful use of
00:05:05 --> 00:05:08 Starlink during the ongoing conflict has
00:05:08 --> 00:05:10 clearly demonstrated the strategic importance
00:05:10 --> 00:05:12 of satellite Internet capabilities. Russia
00:05:12 --> 00:05:15 wants its own independent system. And it's
00:05:15 --> 00:05:17 worth noting that Russia isn't the only
00:05:17 --> 00:05:19 country developing alternative satellite
00:05:19 --> 00:05:21 Internet systems. China has its own ambitious
00:05:21 --> 00:05:23 plans with the, uh, Guang constellation,
00:05:24 --> 00:05:27 potentially 13 satellites. The
00:05:27 --> 00:05:29 European Union is working on its IRIS2S
00:05:29 --> 00:05:32 constellation, and even Amazon is still
00:05:32 --> 00:05:34 pushing forward with Project Cooper despite
00:05:34 --> 00:05:36 delays. We're really seeing the emergence of
00:05:36 --> 00:05:38 multiple sovereign satellite Internet
00:05:38 --> 00:05:40 capabilities, which could fundamentally
00:05:40 --> 00:05:42 change how Internet access works globally.
00:05:43 --> 00:05:45 Avery: It'll be fascinating to See how this plays
00:05:45 --> 00:05:47 out in the increasingly competitive satellite
00:05:47 --> 00:05:48 Internet market.
00:05:48 --> 00:05:51 But let's move on to a really exciting
00:05:51 --> 00:05:53 milestone that has me genuinely excited about
00:05:53 --> 00:05:55 the future of astronomy. NASA has
00:05:55 --> 00:05:58 officially confirmed 6
00:05:58 --> 00:06:00 exoplanets. Actually, it's
00:06:00 --> 00:06:03 6 as of right now, which is just
00:06:03 --> 00:06:05 incredible when you think about how far we've
00:06:05 --> 00:06:05 come.
00:06:06 --> 00:06:08 Anna: I remember when the first exoplanet around a
00:06:08 --> 00:06:11 Sun like Star51 Pegasi B was discovered
00:06:11 --> 00:06:14 back in 1995 by Michelle Mayer and Didier
00:06:14 --> 00:06:16 Quelhos, who won the Nobel Prize for that
00:06:16 --> 00:06:19 discovery. To go from one to over
00:06:19 --> 00:06:22 6 in less than 30 years, that,
00:06:22 --> 00:06:24 that's exponential progress. And the methods
00:06:24 --> 00:06:27 have evolved dramatically, too. We went from
00:06:27 --> 00:06:29 radial velocity detection to transit
00:06:29 --> 00:06:32 photometry with Kepler. And now we have tests
00:06:32 --> 00:06:34 continuing the search. There are still over
00:06:34 --> 00:06:37 8 more candidates awaiting confirmation.
00:06:37 --> 00:06:40 And with the James Webb Space Telescope now
00:06:40 --> 00:06:41 operational, we're starting to actually
00:06:41 --> 00:06:44 analyze the atmospheres of these worlds.
00:06:44 --> 00:06:46 Avery: The diversity is what really strikes me.
00:06:46 --> 00:06:49 We've got 2035 Neptune like
00:06:49 --> 00:06:51 worlds, 1984 gas
00:06:51 --> 00:06:54 giants, 1761 super
00:06:54 --> 00:06:57 earths and 700 terrestrial planets.
00:06:57 --> 00:06:59 NASA is calling this the next great chapter
00:06:59 --> 00:07:02 of exploration. And I couldn't agree more.
00:07:02 --> 00:07:05 Speaking of James Webb, the telescope has
00:07:05 --> 00:07:07 already started revolutionizing our
00:07:07 --> 00:07:10 understanding of exoplanet atmospheres. Just
00:07:10 --> 00:07:12 recently, it detected water vapor clouds
00:07:12 --> 00:07:15 and even weather patterns on, um, planets
00:07:15 --> 00:07:17 hundreds of light years away. We're not just
00:07:17 --> 00:07:19 finding planets anymore. We're actually
00:07:19 --> 00:07:21 studying their climates in real time.
00:07:22 --> 00:07:25 Wasp 96B, for instance, shows clear
00:07:25 --> 00:07:27 signatures of sodium and water in its
00:07:27 --> 00:07:29 atmosphere m along with evidence of cloud
00:07:29 --> 00:07:31 formation. It's like having a weather report
00:07:31 --> 00:07:33 from another star system.
00:07:33 --> 00:07:36 Anna: But here's the thing that keeps us searching.
00:07:36 --> 00:07:38 Despite all these discoveries, we still
00:07:38 --> 00:07:41 haven't found that perfect Earth twin. Every
00:07:41 --> 00:07:43 new world teaches us something different
00:07:43 --> 00:07:45 about planetary formation and the
00:07:45 --> 00:07:47 incredible variety of worlds that exist in
00:07:47 --> 00:07:48 our galaxy.
00:07:49 --> 00:07:51 And speaking of life in unexpected places,
00:07:51 --> 00:07:53 our final story today is absolutely
00:07:53 --> 00:07:56 fascinating. It involves an ancient asteroid
00:07:56 --> 00:07:58 impact in Finland and how catastrophic
00:07:58 --> 00:08:01 events might actually foster life rather than
00:08:01 --> 00:08:02 destroy it.
00:08:02 --> 00:08:04 Avery: This story completely flips our understanding
00:08:04 --> 00:08:07 of asteroid impacts on its head. So,
00:08:07 --> 00:08:09 78 million years ago, a, uh, 1.6
00:08:09 --> 00:08:12 kilometer asteroid slammed into what is now
00:08:12 --> 00:08:14 Finland, creating the Lupuyarvi Crater.
00:08:15 --> 00:08:16 Anna: Now, here's where it gets really interesting.
00:08:17 --> 00:08:19 New research led by scientists from the
00:08:19 --> 00:08:22 University of Helsinki shows that microbial
00:08:22 --> 00:08:24 life colonized the crater's hydrothermal
00:08:24 --> 00:08:27 system within 4.4 million years of the
00:08:27 --> 00:08:29 impact, which in geological terms is
00:08:29 --> 00:08:32 incredibly fast. They found
00:08:32 --> 00:08:34 fossilized biofilms and chemical signatures
00:08:34 --> 00:08:37 that are Unmistakably biological in origin,
00:08:38 --> 00:08:40 this is the first direct evidence linking
00:08:40 --> 00:08:43 microbial activity to asteroid impacts.
00:08:43 --> 00:08:45 What's remarkable is that they used advanced
00:08:45 --> 00:08:48 microscopy and geochemical analysis to
00:08:48 --> 00:08:51 identify these ancient microbes preserved in
00:08:51 --> 00:08:53 the rock record. These organisms were likely
00:08:53 --> 00:08:56 chemosynthetic, meaning they got their energy
00:08:56 --> 00:08:58 from chemical reactions rather than sunlight.
00:08:59 --> 00:09:01 Avery: What this tells us is profound. While
00:09:01 --> 00:09:03 asteroid impacts can certainly be
00:09:03 --> 00:09:05 destructive, we all know what happened to the
00:09:05 --> 00:09:08 dinosaurs. They can also create unique
00:09:08 --> 00:09:10 environments where life can actually thrive.
00:09:10 --> 00:09:13 The impact creates hydrothermal systems that
00:09:13 --> 00:09:15 become perfect habitats for certain
00:09:15 --> 00:09:16 microorganisms organisms.
00:09:16 --> 00:09:19 Anna: This has huge implications for astrobiology,
00:09:19 --> 00:09:21 especially when we think about planets like
00:09:21 --> 00:09:23 Mars or even moons like Europa and
00:09:23 --> 00:09:26 Enceladus. Impact craters aren't just scars
00:09:26 --> 00:09:29 from cosmic violence. They might be cradles
00:09:29 --> 00:09:30 for life.
00:09:31 --> 00:09:33 Before we wrap up today, I want to quickly
00:09:33 --> 00:09:35 mention that Rocket Lab is proposing
00:09:35 --> 00:09:37 something really cool. They want to build a,
00:09:37 --> 00:09:40 uh, Mars telecommunications orbiter that
00:09:40 --> 00:09:42 would provide high speed Internet between
00:09:42 --> 00:09:45 Mars and Earth. Imagine streaming data
00:09:45 --> 00:09:47 from the Red planet. Currently, Mars missions
00:09:47 --> 00:09:50 have to rely on NASA's aging deep space
00:09:50 --> 00:09:52 Network, which creates bottlenecks and
00:09:52 --> 00:09:55 delays. Rocket Lab's proposal would create
00:09:55 --> 00:09:57 dedicated high bandwidth communication links
00:09:57 --> 00:09:59 that could handle the massive data
00:09:59 --> 00:10:01 requirements of future Mars missions,
00:10:01 --> 00:10:04 including eventual human settlements. We're
00:10:04 --> 00:10:06 talking about gigabit speeds across
00:10:06 --> 00:10:09 interplanetary distances. It's science
00:10:09 --> 00:10:12 fiction becoming reality. And
00:10:12 --> 00:10:14 SpaceX has moved their next starship to the
00:10:14 --> 00:10:17 launch pad for flight testing. The pace
00:10:17 --> 00:10:19 of development is just breathtaking.
00:10:19 --> 00:10:22 Each test flight incorporates lessons learned
00:10:22 --> 00:10:24 from the previous ones. They've made
00:10:24 --> 00:10:26 remarkable progress with the Raptor engines,
00:10:26 --> 00:10:29 heat shield technology and landing systems.
00:10:29 --> 00:10:31 Flight 10 successfully demonstrated
00:10:31 --> 00:10:34 controlled re entry and landing burns,
00:10:34 --> 00:10:36 bringing us closer to fully reusable
00:10:36 --> 00:10:39 interplanetary transportation. When you
00:10:39 --> 00:10:42 consider that just a few years ago, landing a
00:10:42 --> 00:10:44 rocket was considered impossible, and now
00:10:44 --> 00:10:47 SpaceX is preparing vehicles for Mars
00:10:47 --> 00:10:49 missions. It's genuinely awe
00:10:49 --> 00:10:50 inspiring.
00:10:51 --> 00:10:53 Avery: What an incredible time to be alive and
00:10:53 --> 00:10:55 watching these developments unfold. From
00:10:55 --> 00:10:57 ancient ozone on Mars that suggests a more
00:10:57 --> 00:11:00 habitable past. To asteroid impacts fostering
00:11:00 --> 00:11:03 life in the most unexpected ways. From
00:11:03 --> 00:11:05 intense competition and satellite Internet
00:11:05 --> 00:11:07 that will reshape global communications, to
00:11:07 --> 00:11:09 thousands of new worlds being discovered and
00:11:09 --> 00:11:12 analyzed in unprecedented detail, the
00:11:12 --> 00:11:14 universe continues to surprise and inspire
00:11:14 --> 00:11:17 us. Each discovery builds upon the others,
00:11:17 --> 00:11:19 creating a more complete picture of our
00:11:19 --> 00:11:21 cosmic neighborhood and our place within it.
00:11:21 --> 00:11:23 We're not just passive observers anymore.
00:11:23 --> 00:11:25 We're active participants in a truly
00:11:25 --> 00:11:28 interplanetary civilization that's taking its
00:11:28 --> 00:11:29 first steps.
00:11:29 --> 00:11:31 Anna: Thanks for joining us on this cosmic journey
00:11:31 --> 00:11:34 today. Remember to visit our website at ah,
00:11:34 --> 00:11:36 astronomydaily, IO where you'll find more
00:11:36 --> 00:11:39 space and astronomy news. And you can drop us
00:11:39 --> 00:11:41 a line, too, if you wish. I'm Anna.
00:11:41 --> 00:11:43 Avery: And I'm Avery. Keep looking up, and we'll see
00:11:43 --> 00:11:45 you tomorrow on Astronomy Daily.