From Paraplegic Astronauts to a Lemon-Shaped World: Your Daily Space Update

0:01 Avery: Hello and welcome to Astronomy Daily, the podcast that brings you the universe one story at a time. I'm Avery. Anna: And I'm Anna. It's great to be with you. Today we've got a great lineup, from a historic first for accessibility in space to a bizarre lemon shaped planet orbiting a dead star. Avery: Plus, we'll be looking at how NASA is getting an unprecedented new view of the sun and how future astronauts might build landing pads on the moon itself. It's a packed show. Anna: It certainly is.

0:32 Let's get right to it. First up, a truly inspiring story of breaking barriers. German engineer Michaela Benthaus just became the first paraplegic person and the first wheelchair user to fly to space. Wow. Avery: That's incredible. This was with Blue Origin, right? Anna: That's right. On their New Shepard rocket for a 10 minute suborbital flight. What's really fascinating is how few adjustments were needed. The capsule was apparently designed with a high degree of accessibility from the start. Avery: That's the key, isn't it?

1:03 Proactive design rather than reactive accommodation. It, shows that space doesn't have to be the exclusive domain of a select few. Anna: Exactly. Benthaus herself said she wants to be a role model, showing that physical limitations shouldn't prevent people from pursuing their dreams. It's a huge step forward for making space truly for everyone. Avery: Absolutely. A fantastic piece of good news to start the day. Alright, from human spaceflight, let's turn our attention to our own star. NASA's Punch mission is giving us a view of the sun that's.

1:35 Well, it's completely new punch, that stands. Anna: For polarimeter, to unify the corona and heliosphere. And what it's doing is pretty revolutionary. Avery: It is, instead of just looking at the corona, PUNCH is watching the solar wind, the stream of particles flowing out from the sun as it expands and fills the solar system. It's using a constellation of four small spacecraft. Anna: Mm, like a wide angle lens for the solar system. Avery: Exactly. They fly in formation and together their cameras capture this continuous panoramic view of the material as it flows past Earth.

2:12 For the first time, we can see the entire process from the corona to a full astronomical unit away, which is Earth's distance from the sun. Anna: And this is crucial for understanding space weather. Things like coronal mass ejections or CMEs, are massive eruptions of plasma that can disrupt satellites and grids here on Earth. Avery: Right before punch, we'd see a CME leave the sun and then we'd have to wait for it to hit a satellite near Earth to know its structure. Now we can track its entire journey.

2:43 Anna: So it gives us a much better ability to forecast the impact of space weather. It's moving from seeing the cannon fire to actually tracking the cannonball through the air. Avery: That's a perfect analogy. It's a game changer for protecting our technology Both in orbit and on the ground. Anna: And the way it achieves this is so CLE4 satellites are essentially imaging polarized light. The sunlight scatters off the electrons in the solar wind. And by measuring the polarization, they can build a 3D picture of its structure and density.

3:15 Avery: It's like giving us 3D glasses to see the invisible solar wind. And because the four satellites are in different positions, they can combine their views to get a truly global perspective that a single spacecraft just couldn't achieve. Anna: Exactly. It's a leap from a single snapshot To a continuous system wide movie. This kind of data will be invaluable not just for earth, but for planning future robotic and crewed missions throughout the solar system, Protecting them from solar outbursts.

3:44 Speaking of ambitious missions, Our next story takes us to the moon, where engineers are tackling a very dusty how to build a launch pad that can be used over and over again. Avery: Right. Because rocket exhaust is incredibly powerful, and on the moon, with its lower gravity and lack of atmosphere, it would just blast lunar dust or regolith everywhere at high speeds. Anna: Exactly. That dust is sharp and abrasive, and it could damage the lander itself or any nearby habitats or equipment. So a new paper is looking at how to solve this using the regolith.

4:20 Avery: Itself, Using the local materials. In situ resource utilization. That's the holy grail for sustainable space exploration. Anna: It is. The idea is to essentially melt the regolith Into a solid, durable surface, A process called sintering. They're thinking of using microwaves or lasers Delivered by robotic builders to create these launch pads. Avery: So you send robots ahead to pave a landing zone for you. That sounds very sci fi. Anna: It does, but it's a very practical challenge. The launch pad needs to withstand incredible temperature swings and the stress of repeated launches.

4:57 The engineers are planning tests to see how the sintered regolith holds up under simulated rocket plume conditions. Avery: And I imagine maintenance is a big issue too. If a pad gets cracked, you can't just send out a construction crew easily. Anna: That's a huge part of it. The plan would have to include robotic systems, not just for building the pads, but for inspecting and repairing them as well. It's a foundational piece of the puzzle For a permanent human presence on the moon. Avery: It's fascinating to think about the logistics.

5:26 Are we talking about paving an entire spaceport or just a small landing circle? Anna: Initially, just a hardened pad about 50 meters in diameter to mitigate the dust problem. But the research paper suggests that this technology is scalable. If you can build one pad, you can link them together over time to create taxiways and larger operational areas. Avery: and what about the energy source? Sensoring regolith with lasers or microwaves Sounds incredibly power intensive. That's a major challenge. On the Moon, it is.

5:58 Anna: The leading concepts involve leveraging solar power with large deployable arrays, potentially charging batteries during the long lunar day to power construction activities. It's a classic chicken and egg problem. You need infrastructure to build infrastructure. This is step one. Avery: Well, from building on our moon to exploring truly bizarre worlds far beyond it, Astronomers using the James Webb Space Telescope have found something that. Well, it looks like it belongs in a different universe.

6:28 Anna: I think I know which one you're talking about. Is this the LEMMON shaped planet? Avery: The one and only. Its Official name is PSR J2322 2652B. But lemon shaped planet is much easier to remember. And the name is literal. It's being distorted into an oblong shape by the immense gravity of the star it orbits. Anna: And that star isn't a normal star. Right. It's a pulsar. A super dense, rapidly spinning remnant of a massive star that went supernova. Avery: Precisely. The gravity is so intense, it's literally stretching the planet.

7:04 But that's not even the weirdest part. Its atmosphere is unlike anything we've seen. It's extremely rich in carbon. Anna: So not a water world, but a carbon world. What does that even mean for its appearance? Avery: The model suggests it could have clouds of soot and an atmosphere thick with hydrocarbons. It's a completely alien environment. That really challenges our understanding of how planets can form and what they can be made of, Especially around such an extreme object like a pulsar. Anna: It really is.

7:33 And it raises the question of how it even survived. The supernova that created the pulsar should have completely obliterated any nearby planets. Avery: There are a couple of theories. One is that it's a second generation planet formed from the debris disk left over after the supernova. The carbon rich composition might support that idea. Anna: Or it could have been a captured rogue planet that wandered too close to the pulsar long after the explosion. But getting into such a tight orbit without being torn apart is a tricky gravitational dance.

8:07 Avery: Either way, it's a testament to the universe's. Ability to create stability in the most chaotic of environments. A warped, sooty, lemon shaped world calmly orbiting one of the most violent objects we know of. It's poetic in a strange way. Anna: Incredible. Every time we think we have a handle on the types of planets out there, JWST finds another one to break all the rules. Okay, let's bring it back to our own solar system for our last big story today, over to the Red Planet. NASA's Perseverance rover has been getting an up close look at some fascinating features on the Martian surface.

8:45 Megaripples. Avery: These aren't like the little ripples you see in, sand at the beach, are they? Anna: Not at all. These are huge, up to 2 meters tall. They're formed by wind, just like dunes on Earth. But their size and shape give us vital clues about Mars's more recent climate history and wind patterns. Avery: So by studying them, we can learn about the Martian weather today and in the not so distant past. Anna: That's the idea. The rover has been examining a field of them, nicknamed Honeyguide.

9:16 By analyzing the grain size and structure, scientists can figure out the wind speeds needed to build them. It helps paint a picture of Mars as a dynamic, active world, not just a static one. Avery: It's amazing how much geology can tell us about a planet's atmosphere, right? Anna: But for now, from accessible spaceflight to alien worlds, it's been quite a day in astronomy. Avery: It certainly has. And that's all the time we have for this episode of Astronomy Daily. We hope you've enjoyed this tour of the latest cosmic happenings.

9:49 Anna: We always appreciate you joining us. Avery: Be sure to subscribe wherever you get your podcasts so you don't miss an episode. Until next time. I'm Avery. Anna: And I'm Ana. keep looking up.

10:12 Avery: The toe.