- Threat to the Atacama Desert: Scientists are raising alarms over a massive renewable energy project near Chile’s Atacama Desert, home to the Paranal Observatory. Concerns include potential light pollution, dust interference, and atmospheric heating that could compromise the region's exceptional astronomical conditions. The scientific community is advocating for solutions to minimize these impacts while balancing sustainable energy needs.
- Blue Origin's New Innovations: Blue Origin has unveiled exciting new hardware, including the Blue Moon Mark One robotic lander set to fly by 2026, a more powerful version of the New Glenn rocket, and Blue Ring, a space tug designed to support logistics in Earth orbit. These advancements highlight the company's commitment to building a sustainable space infrastructure.
- Starquakes and Cosmic Mysteries: NASA's TESS has detected unusual starquakes from a red giant orbiting the black hole Gaia BH2. The star's rapid spin and curious chemical composition suggest it may be the result of a merger between two stars, showcasing the power of astroseismology in uncovering cosmic histories.
- Time on Mars: A fascinating revelation indicates that time moves slightly faster on Mars compared to Earth due to its weaker gravity and slower orbit. This difference, while minuscule, poses significant implications for future Martian missions, necessitating a standardized time system for coordinated operations.
- Innovative Martian Construction: Researchers propose a groundbreaking method for building on Mars using local resources. By combining Martian soil with Earth bacteria, scientists aim to create bioconcrete for construction, while also producing oxygen, offering a dual solution for habitat creation and life support in the harsh Martian environment.
- For more cosmic updates, visit our website at astronomydaily.io. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTubeMusic, TikTok, and our new Instagram account! Don’t forget to subscribe to the podcast on Apple Podcasts, Spotify, iHeartRadio, or wherever you get your podcasts.
- Thank you for tuning in. This is Avery and Anna signing off. Until next time, keep looking up and exploring the wonders of our universe.
Threat to the Atacama Desert
[Astronomy Journal](https://www.astronomy.com/)
Blue Origin Innovations
[Blue Origin](https://www.blueorigin.com/)
Starquakes Research
[NASA TV](https://www.nasa.gov/tess)
Time on Mars Studies
[Physics Today](https://www.physicstoday.org/)
Martian Construction Research
[NASA Mars](https://mars.nasa.gov/)
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This episode includes AI-generated content.
00:00:00 --> 00:00:02 Avery: Hello and welcome to Astronomy Daily, the
00:00:02 --> 00:00:04 podcast bringing you the biggest news from
00:00:04 --> 00:00:07 across the cosmos. I'm your host,
00:00:07 --> 00:00:08 Avery.
00:00:08 --> 00:00:11 Anna: And I'm Anna. It's great to be with you
00:00:11 --> 00:00:13 today, Avery. We're talking about a threat to
00:00:13 --> 00:00:16 one of Earth's best windows to the universe.
00:00:16 --> 00:00:19 Some big reveals from Blue Origin, and a
00:00:19 --> 00:00:22 star that's singing a strange cosmic song.
00:00:22 --> 00:00:25 Avery: That's right. Plus we'll dive into why
00:00:25 --> 00:00:28 time literally moves m faster on Mars
00:00:28 --> 00:00:31 and a, uh, fascinating new idea for building
00:00:31 --> 00:00:33 Martian homes using
00:00:33 --> 00:00:34 bacteria.
00:00:35 --> 00:00:37 Let's start with that story from Earth, Anna.
00:00:37 --> 00:00:38 It sounds pretty serious.
00:00:39 --> 00:00:42 Anna: It is. We're talking about Chile's
00:00:42 --> 00:00:44 Atacama Desert, home to the Paranal
00:00:44 --> 00:00:46 Observatory and the Very Large Telescope.
00:00:47 --> 00:00:49 It's one of the best places on the planet for
00:00:49 --> 00:00:52 astronomy because of its clear, dark and
00:00:52 --> 00:00:53 stable skies.
00:00:54 --> 00:00:56 Avery: An, um, absolutely critical location
00:00:56 --> 00:00:57 for science.
00:00:58 --> 00:01:01 Anna: Exactly. But now that's under what some top
00:01:01 --> 00:01:04 scientists, including a Nobel Laureate,
00:01:04 --> 00:01:07 are calling an imminent threat. A, uh,
00:01:07 --> 00:01:09 massive renewable energy project is planned
00:01:09 --> 00:01:12 for a site nearby. While green energy is
00:01:12 --> 00:01:15 vital, the scale of this project has
00:01:15 --> 00:01:17 astronomers deeply concerned.
00:01:18 --> 00:01:20 Avery: So what are the specific worries? Is it just
00:01:20 --> 00:01:21 light pollution?
00:01:21 --> 00:01:23 Anna: That's a big part of it. The project could
00:01:23 --> 00:01:26 brighten the night sky, kick up dust that
00:01:26 --> 00:01:29 obscures faint objects, and the heat could
00:01:29 --> 00:01:31 disrupt the state atmosphere that makes
00:01:31 --> 00:01:32 imaging so sharp.
00:01:32 --> 00:01:35 Avery: Wow. So it's a triple threat to
00:01:35 --> 00:01:37 visibility. It's a tough situation. A, uh,
00:01:38 --> 00:01:40 conflict between two positive
00:01:41 --> 00:01:44 advancing sustainable energy and
00:01:44 --> 00:01:47 protecting our ability to explore
00:01:47 --> 00:01:48 the universe.
00:01:48 --> 00:01:51 Anna: It is. The open letter from the scientific
00:01:51 --> 00:01:53 community isn't trying to stop the project,
00:01:54 --> 00:01:56 but to raise the alarm and work with the
00:01:56 --> 00:01:58 developers to find a solution that mitigates
00:01:58 --> 00:02:01 the these impacts. Hopefully a compromise can
00:02:01 --> 00:02:02 be found.
00:02:02 --> 00:02:05 Avery: It's, uh, a truly delicate balance.
00:02:06 --> 00:02:08 Are there any specific technical solutions
00:02:08 --> 00:02:11 being discussed? I imagine it's more complex
00:02:11 --> 00:02:13 than just asking them to build it somewhere
00:02:13 --> 00:02:15 else. We're talking about things like
00:02:15 --> 00:02:18 specialized light shielding or perhaps
00:02:18 --> 00:02:21 operational agreements to limit dust
00:02:21 --> 00:02:23 creating activities during
00:02:23 --> 00:02:26 critical observation windows at night.
00:02:26 --> 00:02:28 Anna: Precisely. They're suggesting technical
00:02:28 --> 00:02:30 solutions like advanced dust suppression,
00:02:31 --> 00:02:34 special lighting to minimize sky glow, and
00:02:34 --> 00:02:36 even pausing industrial activity. Based on
00:02:36 --> 00:02:38 observatory schedules.
00:02:38 --> 00:02:39 Avery: Let's hope so.
00:02:40 --> 00:02:43 From a project threatening our view of space,
00:02:43 --> 00:02:45 let's turn to one that's actively building
00:02:45 --> 00:02:48 our way into it. Blue Origin has been
00:02:48 --> 00:02:50 making some serious announcements.
00:02:51 --> 00:02:53 Anna: Mm mhm. They've been very busy. Fresh off a
00:02:53 --> 00:02:55 successful New Shepard launch, they pulled
00:02:55 --> 00:02:58 the curtain back on a lot of new hardware.
00:02:58 --> 00:03:00 Avery: They sure have. First they unveiled the blue
00:03:00 --> 00:03:02 moon mark one robotic lander.
00:03:03 --> 00:03:06 Scheduled to fly by 2026.
00:03:06 --> 00:03:08 It's the precursor to the crewed lander
00:03:09 --> 00:03:11 for NASA's Artemis 5 mission.
00:03:12 --> 00:03:14 Anna: Right. This is their cargo version. It's
00:03:14 --> 00:03:17 designed to test the landing systems and
00:03:17 --> 00:03:19 deliver payloads to the lunar surface ahead
00:03:19 --> 00:03:21 of the astronauts. They also announced a more
00:03:21 --> 00:03:23 powerful version of their new Glenn rocket.
00:03:23 --> 00:03:24 Right?
00:03:24 --> 00:03:26 Avery: That's right, the 9 times 4
00:03:27 --> 00:03:29 variant. But what really caught my eye were
00:03:29 --> 00:03:31 the other two announcements. They revealed
00:03:31 --> 00:03:34 details on something called Blue Ring,
00:03:34 --> 00:03:36 which is essentially a space tug.
00:03:37 --> 00:03:39 It can host payloads, refuel other
00:03:39 --> 00:03:42 spacecraft, and basically act as a logistics
00:03:42 --> 00:03:45 vehicle in Earth orbit and beyond.
00:03:45 --> 00:03:48 Anna: A space tug makes sense for building out in
00:03:48 --> 00:03:51 space infrastructure. And what was the last
00:03:51 --> 00:03:52 one? Something from Mars.
00:03:53 --> 00:03:56 Avery: Exactly. A new deployable aerobrake
00:03:56 --> 00:03:58 technology, like a giant parachute
00:03:59 --> 00:04:02 using a planet's atmosphere to slow a
00:04:02 --> 00:04:04 spacecraft for future Mars missions.
00:04:05 --> 00:04:07 It shows they're thinking about the entire
00:04:07 --> 00:04:09 ecosystem of space exploration.
00:04:10 --> 00:04:12 Anna: And that's a huge piece of the puzzle. We
00:04:12 --> 00:04:15 hear a lot about launching things, but not as
00:04:15 --> 00:04:16 much about what happens once they're up
00:04:16 --> 00:04:19 there. A versatile platform like Blue Ring
00:04:19 --> 00:04:21 could be used for satellite servicing,
00:04:21 --> 00:04:23 refueling, or maybe even tackling the
00:04:23 --> 00:04:25 growing problem of orbital debris. Right?
00:04:25 --> 00:04:28 Avery: Exactly. The long term vision is a
00:04:28 --> 00:04:31 sustainable cislun. We're
00:04:31 --> 00:04:33 talking about a future where space isn't just
00:04:33 --> 00:04:36 a destination, but a domain for industry and
00:04:36 --> 00:04:39 commerce. A vehicle like Blue Ring could
00:04:39 --> 00:04:41 refuel satellites, giving them a new lease on
00:04:41 --> 00:04:44 life, move infrastructure into place for
00:04:44 --> 00:04:47 future space stations, or even act as a
00:04:47 --> 00:04:50 mobile data relay. It transforms
00:04:50 --> 00:04:53 orbital space from a passive location into
00:04:53 --> 00:04:54 a dynamic workspace.
00:04:55 --> 00:04:56 Anna: It's an ambitious roadmap.
00:04:57 --> 00:05:00 Speaking of ambitious missions, NASA's test
00:05:00 --> 00:05:02 satellite, the Transiting Exoplanet Survey
00:05:02 --> 00:05:04 Sate Satellite, has helped uncover a
00:05:04 --> 00:05:07 fascinating cosmic mystery. It's about
00:05:07 --> 00:05:10 a star that's singing a very strange song.
00:05:11 --> 00:05:14 Avery: Singing? Tell me more. Are we
00:05:14 --> 00:05:15 talking about vibrations?
00:05:16 --> 00:05:18 Anna: In a way, yes. Astronomers detected
00:05:18 --> 00:05:21 starquakes from a red giant. These
00:05:21 --> 00:05:23 seismic waves cause the star's brightness to
00:05:23 --> 00:05:26 vary, which is how TESS detected them.
00:05:26 --> 00:05:29 This star is orbiting a black hole known as
00:05:29 --> 00:05:31 Gaia BH2.
00:05:32 --> 00:05:34 Avery: Okay. A, uh, red giant and a black hole.
00:05:35 --> 00:05:37 That's already an interesting pair. So what's
00:05:37 --> 00:05:39 so strange about the starquakes?
00:05:39 --> 00:05:42 Anna: Well, the data revealed a couple of odd
00:05:42 --> 00:05:45 things. First, the star is spinning
00:05:45 --> 00:05:48 way faster than a red giant should. They tend
00:05:48 --> 00:05:51 to slow down as they expand. Second,
00:05:51 --> 00:05:53 its chemical composition is weird.
00:05:54 --> 00:05:56 It seems to be relatively young, but it's
00:05:56 --> 00:05:59 made of very ancient materials. It's low in
00:05:59 --> 00:06:00 heavy elements.
00:06:01 --> 00:06:04 Avery: Young, but made of old stuff and
00:06:04 --> 00:06:07 spinning too fast. That doesn't add up.
00:06:07 --> 00:06:08 What's the theory?
00:06:09 --> 00:06:11 Anna: The leading hypothesis is a dramatic one,
00:06:11 --> 00:06:14 that this star is actually two stars that
00:06:14 --> 00:06:17 merged. A cosmic merger would explain both
00:06:17 --> 00:06:20 the strange chemical mix and its high spin
00:06:20 --> 00:06:20 rate.
00:06:21 --> 00:06:23 Avery: It really is. And the fact that they could
00:06:23 --> 00:06:26 deduce all this from tiny fluctuations in
00:06:26 --> 00:06:29 starlight is incredible. This field of
00:06:29 --> 00:06:31 astroseismology, studying starquakes
00:06:32 --> 00:06:34 is like listening to the inside of a star
00:06:34 --> 00:06:37 with a stethoscope. It's revealing details we
00:06:37 --> 00:06:38 could never see directly.
00:06:38 --> 00:06:41 Anna: It's a perfect example of multi mission
00:06:41 --> 00:06:44 astronomy. Gaia provided the position and
00:06:44 --> 00:06:47 motion, while TESS provided the internal
00:06:47 --> 00:06:49 diagnostics. Combining the data let them
00:06:49 --> 00:06:50 piece together.
00:06:50 --> 00:06:52 Avery: A hidden history from
00:06:52 --> 00:06:55 cosmic collisions to cosmic clocks.
00:06:56 --> 00:06:58 And I saw a story that sounds like it's
00:06:58 --> 00:07:01 straight out of science fiction. Uh,
00:07:01 --> 00:07:03 apparently time itself moves at a different
00:07:03 --> 00:07:04 speed on Mars.
00:07:04 --> 00:07:07 Anna: It does. And it's not science fiction. It's
00:07:07 --> 00:07:10 just pure Einstein. Based on calculations
00:07:10 --> 00:07:13 from his theory of general relativity, Time
00:07:13 --> 00:07:15 on Mars passes slightly faster than it does
00:07:15 --> 00:07:16 here on Earth.
00:07:17 --> 00:07:19 Avery: Uh, how much faster are we talking? Am I
00:07:19 --> 00:07:21 going to age noticeably quicker if I move to
00:07:21 --> 00:07:21 Mars?
00:07:22 --> 00:07:24 Anna: Hardly. The difference is a tiny fraction of
00:07:24 --> 00:07:27 a second per day. It comes down to
00:07:27 --> 00:07:30 relativistic effects. Mars, weaker gravity
00:07:30 --> 00:07:33 and slower orbit mean time passes slightly
00:07:33 --> 00:07:34 faster there relative to us.
00:07:35 --> 00:07:37 Avery: Okay, so I won't need extra anti aging cream.
00:07:38 --> 00:07:41 I believe the figure is 477
00:07:41 --> 00:07:43 microseconds a day. That sounds small, but I
00:07:43 --> 00:07:45 bet it adds up when you're dealing with high
00:07:45 --> 00:07:46 precision technology.
00:07:47 --> 00:07:50 Anna: That's the critical point. Just like our GPS
00:07:50 --> 00:07:52 satellites. Future Martian missions will need
00:07:52 --> 00:07:54 to account for this time diagn violation for
00:07:54 --> 00:07:56 synchronized communications and navigation.
00:07:57 --> 00:07:59 It's fundamental for our interplanetary
00:07:59 --> 00:07:59 future.
00:08:00 --> 00:08:02 Avery: It really puts into perspective how
00:08:02 --> 00:08:04 interconnected everything is at that level of
00:08:04 --> 00:08:07 physics. Does this also mean we'd need a
00:08:07 --> 00:08:09 separate time standard for Mars? Something
00:08:09 --> 00:08:11 like coordinated Mars time similar to
00:08:11 --> 00:08:12 UTC on Earth?
00:08:13 --> 00:08:15 Anna: That's exactly what space agencies are
00:08:15 --> 00:08:17 working on. A defined Martian time standard
00:08:17 --> 00:08:19 is essential for mission coordination.
00:08:19 --> 00:08:22 Without it, every mission would be using its
00:08:22 --> 00:08:25 own reference frame, leading to chaos. It's
00:08:25 --> 00:08:27 not just about convenience, it's about safety
00:08:27 --> 00:08:30 and precision. Imagine trying to coordinate a
00:08:30 --> 00:08:32 landing while your orbiter and ground control
00:08:32 --> 00:08:35 are seconds out of sync. Establishing a
00:08:35 --> 00:08:37 common clock that accounts for the
00:08:37 --> 00:08:39 relativistic drift is a foundational step
00:08:39 --> 00:08:42 before we can have rovers, orbiters and
00:08:42 --> 00:08:45 future human bases all working in perfect
00:08:45 --> 00:08:47 sync. It's a complex problem of
00:08:47 --> 00:08:49 interplanetary timekeeping that has to be
00:08:49 --> 00:08:49 solved.
00:08:50 --> 00:08:52 Avery: Speaking of our interplanetary future, let's
00:08:52 --> 00:08:55 talk about actually living on Mars. Our final
00:08:55 --> 00:08:57 story today is about a really innovative
00:08:57 --> 00:09:00 Approach to construction on the red planet
00:09:00 --> 00:09:02 using what scientists call in situ resource
00:09:02 --> 00:09:03 utilization.
00:09:03 --> 00:09:06 Anna: Right. The idea of living off the land.
00:09:06 --> 00:09:09 It's far too expensive to launch everything
00:09:09 --> 00:09:11 we'd need from Earth. So we have to use
00:09:11 --> 00:09:13 what's already on Mars.
00:09:13 --> 00:09:15 Avery: Exactly. And this new proposal is brilliant.
00:09:16 --> 00:09:18 It suggests using martian soil, or
00:09:18 --> 00:09:21 regolith, mixed with two specific types of
00:09:21 --> 00:09:24 Earth bacteria to create building materials.
00:09:24 --> 00:09:27 Anna: Bacteria as cement mixers. How would
00:09:27 --> 00:09:28 that work?
00:09:28 --> 00:09:30 Avery: It's a, uh, two part system. The first
00:09:30 --> 00:09:32 bacterium, Sporosarcina
00:09:32 --> 00:09:35 pasteuri, creates calcite, a, uh,
00:09:35 --> 00:09:37 powerful binding agent. When mixed with
00:09:37 --> 00:09:40 martian soil, it creates a solid, concrete
00:09:40 --> 00:09:42 like material, bioconcrete.
00:09:42 --> 00:09:45 Anna: That's incredible. So you can create
00:09:45 --> 00:09:47 bricks and foundations right there.
00:09:48 --> 00:09:49 What about the second bacteria?
00:09:49 --> 00:09:51 Avery: That's where it gets even better. The second
00:09:51 --> 00:09:54 one, Caracocidaxis, is a type
00:09:54 --> 00:09:57 of cyanocos nanobacteria. Its superpower is
00:09:57 --> 00:10:00 photosynthesis. It would be engineered to
00:10:00 --> 00:10:02 take in the martian atmosphere, which is
00:10:02 --> 00:10:05 mostly carbon dioxide and sunlight, and
00:10:05 --> 00:10:07 produce oxygen as a byproduct.
00:10:07 --> 00:10:10 Anna: So you get building materials and a life
00:10:10 --> 00:10:13 support system in one package. One set
00:10:13 --> 00:10:15 of microbes builds your house and the other
00:10:15 --> 00:10:17 helps you breathe inside it.
00:10:17 --> 00:10:19 Avery: That's the concept. It's a truly elegant
00:10:19 --> 00:10:22 solution that integrates construction and
00:10:22 --> 00:10:24 life support. We are essentially using
00:10:24 --> 00:10:26 nature's own nanotechnology to solve
00:10:27 --> 00:10:29 monumental engineering challenges light years
00:10:29 --> 00:10:32 from home. It's still in the early stages, of
00:10:32 --> 00:10:35 course, with huge hurdles around planetary
00:10:35 --> 00:10:37 protection and ensuring these microbes
00:10:37 --> 00:10:39 perform as expected in the harsh martian
00:10:39 --> 00:10:42 environment. But it's this kind of creative
00:10:42 --> 00:10:45 biological engineering that might just make
00:10:45 --> 00:10:47 living on Mars a reality. Turning the
00:10:47 --> 00:10:49 planet's own resources into a sustainable
00:10:49 --> 00:10:50 habitat.
00:10:50 --> 00:10:53 Anna: Okay, that's a game changer. But what
00:10:53 --> 00:10:56 about the conditions on Mars? We're talking
00:10:56 --> 00:10:58 about extreme cold, low
00:10:58 --> 00:11:01 atmospheric pressure, and intense
00:11:01 --> 00:11:03 radiation. Can these Earth based
00:11:03 --> 00:11:06 bacteria actually survive there long enough
00:11:06 --> 00:11:07 to do their jobs?
00:11:07 --> 00:11:09 Avery: That's the focus of the research. One of the
00:11:09 --> 00:11:12 bacteria is an extremophile, Incredibly tough
00:11:12 --> 00:11:15 and radiation resistant. The plan is to use
00:11:15 --> 00:11:17 them in shielded bioreactors to create
00:11:17 --> 00:11:19 building materials in a controlled
00:11:19 --> 00:11:19 environment.
00:11:20 --> 00:11:22 Anna: And what a future that would be.
00:11:22 --> 00:11:24 And that brings us to the end of today's
00:11:24 --> 00:11:27 episode of Astronomy Daily. From
00:11:27 --> 00:11:30 protecting our view of the stars in Chile, to
00:11:30 --> 00:11:33 listening to their songs, and even planning
00:11:33 --> 00:11:35 our homes among them, it's been quite a
00:11:35 --> 00:11:36 journey.
00:11:36 --> 00:11:38 Avery: Thanks for tuning in. Join us again tomorrow
00:11:38 --> 00:11:41 as we continue to explore the universe. Until
00:11:41 --> 00:11:42 then, keep looking up.
00:11:48 --> 00:11:49 The world.