Spacecraft Drama, Galactic Neighborhoods, and the Push for a Circular Space Economy
Space News TodayDecember 02, 202500:13:0311.96 MB

Spacecraft Drama, Galactic Neighborhoods, and the Push for a Circular Space Economy

Emergency Return of Shenzhou 20: China's Shenzhou 20 spacecraft is making an uncrewed emergency return to Earth after sustaining damage from a micrometeoroid, which caused a crack in its window. The crew safely returned on a different vessel, marking a significant first for China's space program.

Galactic Neighborhoods Matter: The Deep Extragalactic Visible Legacy Survey (DEVELS) reveals that a galaxy's local environment significantly influences its evolution. Galaxies in crowded clusters exhibit slower star formation rates compared to isolated ones, providing crucial insights into cosmic evolution.

Launch Week Extravaganza: This week sees 10 scheduled orbital launches, including five Starlink missions by SpaceX, South Korea's COMSAT 7 satellite launch by Arianespace, and Japan's H3 rocket carrying a critical GPS satellite, highlighting the rapid advancements in the global space industry.

Ancient Mars Rivers: A new study identifies 16 massive ancient river drainage systems on Mars, suggesting a much wetter past. These findings offer promising locations for searching for signs of past Martian life, utilizing high-resolution data from Mars orbiters.

Solar Activity Alert: The sun has unleashed a powerful X 1.9 class solar flare, causing radio blackouts and raising concerns about future solar activity. Forecasters are closely monitoring a larger sunspot region that could impact Earth with potential geomagnetic disturbances.

Sustainable Space Practices: Experts advocate for a circular space economy to combat space debris, emphasizing the importance of designing durable, repairable satellites and creating multi-purpose space stations to ensure sustainable operations in orbit for future generations.

For more cosmic updates, visit our website at astronomydaily.io (http://www.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.

✍️ Episode References

Shenzhou 20 Emergency Return

[China National Space Administration]( http://www.cnsa.gov.cn/ (http://www.cnsa.gov.cn/) )

DEVELS Survey Findings

[Astronomy Journal]( https://www.astronomy.com/ (https://www.astronomy.com/) )

Launch Week Highlights

[NASA Launch Schedule]( https://www.nasa.gov/launchschedule (https://www.nasa.gov/launchschedule) )

Mars River Systems Study

[Mars Reconnaissance Orbiter]( https://mars.nasa.gov/mro/ (https://mars.nasa.gov/mro/) )

Solar Activity Reports

[NOAA Space Weather Prediction Center]( https://www.swpc.noaa.gov/ (https://www.swpc.noaa.gov/) )

Circular Space Economy Initiatives

[Astroscale]( https://astroscale.com/ (https://astroscale.com/) )


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Kind: captions Language: en
00:00:00 --> 00:00:02 Hello and welcome to [music] Astronomy

00:00:02 --> 00:00:04 Daily, the podcast that brings you the

00:00:04 --> 00:00:07 biggest news from across the cosmos. I'm

00:00:07 --> 00:00:09 Avery and as always, I'm joined by the

00:00:09 --> 00:00:11 brilliant Anna.

00:00:11 --> 00:00:14 >> Hi Avery and hello to all our listeners.

00:00:14 --> 00:00:16 We have a packed show [music] today

00:00:16 --> 00:00:18 covering everything from drama in low

00:00:18 --> 00:00:21 Earth orbit to the ancient history of

00:00:21 --> 00:00:22 Mars. [music]

00:00:22 --> 00:00:24 >> It's going to be a great one. Let's

00:00:24 --> 00:00:26 start with a story that sounds like

00:00:26 --> 00:00:28 something out of a movie. a damaged

00:00:28 --> 00:00:30 [music] spacecraft making an emergency

00:00:30 --> 00:00:32 return to Earth.

00:00:32 --> 00:00:33 >> That's right. We're talking about

00:00:33 --> 00:00:37 China's Shenzho 20 spacecraft. It was up

00:00:37 --> 00:00:40 at the Tong Gang space station, but it's

00:00:40 --> 00:00:43 now being sent back to Earth uncrrewed

00:00:43 --> 00:00:45 after sustaining some damage.

00:00:45 --> 00:00:48 >> Damage from what? This is the scary part

00:00:48 --> 00:00:50 of space travel.

00:00:50 --> 00:00:52 >> The suspected culprit is a

00:00:52 --> 00:00:55 micrometeoroid estimated to be smaller

00:00:55 --> 00:00:58 than 1 mm. It appears to have caused a

00:00:58 --> 00:01:00 crack in the window of the return

00:01:00 --> 00:01:01 capsule.

00:01:01 --> 00:01:04 >> Wow, less than 1 millm. It's amazing how

00:01:04 --> 00:01:07 something so tiny can be such a huge

00:01:07 --> 00:01:10 threat at orbital velocities. So, what

00:01:10 --> 00:01:11 happened to the crew?

00:01:11 --> 00:01:13 >> Well, this is where the safety protocols

00:01:13 --> 00:01:16 really shine. The crew was forced to

00:01:16 --> 00:01:18 return to Earth on a different vessel,

00:01:18 --> 00:01:22 the Shenzhia 19, which was docked as a

00:01:22 --> 00:01:24 lifeboat. This is actually a first for

00:01:24 --> 00:01:27 China's space program, having to use a

00:01:27 --> 00:01:29 backup ride home like this.

00:01:29 --> 00:01:32 >> That's a testament to good planning. So

00:01:32 --> 00:01:33 now they're bringing the damaged capsule

00:01:34 --> 00:01:36 back on its own to figure out exactly

00:01:36 --> 00:01:37 what happened.

00:01:37 --> 00:01:40 >> Exactly. The uncrrewed return will allow

00:01:40 --> 00:01:42 engineers to inspect the damage up

00:01:42 --> 00:01:44 close. It's a critical learning

00:01:44 --> 00:01:46 opportunity for understanding the

00:01:46 --> 00:01:49 realworld risks of orbital debris and

00:01:49 --> 00:01:50 micrometeoroids.

00:01:50 --> 00:01:53 >> Absolutely. Now, from the dangers in our

00:01:53 --> 00:01:56 cosmic neighborhood, let's zoom way out

00:01:56 --> 00:01:59 to look at how a galaxy's neighborhood

00:01:59 --> 00:02:01 shapes its entire life.

00:02:02 --> 00:02:04 >> Right. This comes from a huge project

00:02:04 --> 00:02:07 called the Deep Extragalactic Visible

00:02:07 --> 00:02:11 Legacy Survey, or Devils for short.

00:02:11 --> 00:02:13 >> Got to love the acronyms. So, what did

00:02:13 --> 00:02:15 the Devil's Survey find?

00:02:15 --> 00:02:17 >> It confirmed something astronomers have

00:02:17 --> 00:02:20 long suspected. that a galaxy's local

00:02:20 --> 00:02:22 environment, its neighborhood, has a

00:02:22 --> 00:02:25 huge impact on its evolution.

00:02:25 --> 00:02:28 >> So, it's cosmic real estate. Location,

00:02:28 --> 00:02:29 location, location.

00:02:29 --> 00:02:31 >> Pretty much. The data shows that

00:02:31 --> 00:02:33 galaxies in more crowded environments,

00:02:33 --> 00:02:36 like dense galaxy clusters, have much

00:02:36 --> 00:02:38 slower star forming rates compared to

00:02:38 --> 00:02:41 their more isolated cousins out in the

00:02:41 --> 00:02:42 cosmic voids.

00:02:42 --> 00:02:45 >> That makes sense. In a crowded cluster,

00:02:45 --> 00:02:46 there are more gravitational

00:02:46 --> 00:02:49 interactions, more mergers, and

00:02:49 --> 00:02:52 processes like ram pressure stripping,

00:02:52 --> 00:02:55 where a galaxy's star forming gas can be

00:02:55 --> 00:02:56 torn away as it moves through the

00:02:56 --> 00:02:57 cluster.

00:02:57 --> 00:02:59 >> That's the leading theory. And this new

00:03:00 --> 00:03:02 data release from Doubles provides some

00:03:02 --> 00:03:04 of the strongest evidence yet to back it

00:03:04 --> 00:03:07 up. It helps us understand why some

00:03:07 --> 00:03:09 galaxies are vibrant and full of new

00:03:09 --> 00:03:12 stars while others are old, red, and

00:03:12 --> 00:03:13 retired.

00:03:13 --> 00:03:16 >> It's cosmic evolution in action. The

00:03:16 --> 00:03:18 Devil's Survey is essentially creating a

00:03:18 --> 00:03:21 census of these different galactic

00:03:21 --> 00:03:23 lifestyles, helping us piece together

00:03:23 --> 00:03:25 the complete life cycle of galaxies

00:03:25 --> 00:03:27 across the universe.

00:03:27 --> 00:03:29 >> A fascinating study indeed.

00:03:29 --> 00:03:31 >> Speaking of crowded environments, things

00:03:31 --> 00:03:33 are getting very busy right here at

00:03:33 --> 00:03:36 home. This week is absolutely jam-packed

00:03:36 --> 00:03:38 with launches.

00:03:38 --> 00:03:41 >> It really is. There are 10 orbital

00:03:41 --> 00:03:43 launches on the calendar. Let's run

00:03:43 --> 00:03:45 through the highlights.

00:03:45 --> 00:03:48 >> Leading the charge, as usual, is SpaceX.

00:03:48 --> 00:03:50 They have a staggering five Starlink

00:03:50 --> 00:03:52 deployment missions scheduled for this

00:03:52 --> 00:03:54 week alone. The internet constellation

00:03:54 --> 00:03:57 just keeps growing. Then over in French

00:03:57 --> 00:04:00 Guana, Arian Space is set to launch

00:04:00 --> 00:04:03 South Korea's Comat 7 satellite, which

00:04:04 --> 00:04:06 is a very highresolution Earth

00:04:06 --> 00:04:07 observation satellite.

00:04:07 --> 00:04:10 >> Mhm. And don't forget Rocket Lab.

00:04:10 --> 00:04:11 They're launching from New Zealand

00:04:11 --> 00:04:13 carrying the Rays 4 Demonstrator

00:04:13 --> 00:04:16 Satellite for JAXA, the Japanese Space

00:04:16 --> 00:04:20 Agency. And speaking of Japan, their own

00:04:20 --> 00:04:23 new heavy lift rocket, the H3, is slated

00:04:23 --> 00:04:26 to launch a crucial navigation satellite

00:04:26 --> 00:04:29 for their national GPS system. Plus,

00:04:29 --> 00:04:31 China has two of their own launches

00:04:31 --> 00:04:33 scheduled. It's non-stop.

00:04:33 --> 00:04:35 >> That H3 rocket launch for Japan is

00:04:35 --> 00:04:37 particularly significant, isn't it?

00:04:37 --> 00:04:39 They've had a few setbacks with that

00:04:39 --> 00:04:39 program.

00:04:40 --> 00:04:43 >> It is. The H3 is Japan's next generation

00:04:43 --> 00:04:46 flagship rocket. Designed to be more

00:04:46 --> 00:04:48 affordable and flexible than its

00:04:48 --> 00:04:50 predecessor. A successful launch is

00:04:50 --> 00:04:53 crucial for securing Japan's independent

00:04:53 --> 00:04:55 access to space and for competing in the

00:04:55 --> 00:04:57 commercial launch market. This mission

00:04:58 --> 00:05:00 will be a major test of its capabilities

00:05:00 --> 00:05:03 and reliability after a failure on its

00:05:03 --> 00:05:04 debut flight.

00:05:04 --> 00:05:06 >> And the Comat 7 for South Korea, what's

00:05:06 --> 00:05:10 its primary role? Comat 7 is a powerful

00:05:10 --> 00:05:13 reconnaissance satellite. With its very

00:05:13 --> 00:05:15 high resolution imaging, it can be used

00:05:15 --> 00:05:17 for national security, disaster

00:05:18 --> 00:05:20 monitoring, and managing natural

00:05:20 --> 00:05:22 resources. It's part of a growing trend

00:05:22 --> 00:05:25 of nations developing their own advanced

00:05:25 --> 00:05:27 Earth observation capabilities.

00:05:27 --> 00:05:29 >> It really shows you the current pace of

00:05:29 --> 00:05:31 the global space industry. Okay, from

00:05:31 --> 00:05:34 low Earth orbit, let's journey to a

00:05:34 --> 00:05:36 place that was once much more active,

00:05:36 --> 00:05:38 the surface of Mars.

00:05:38 --> 00:05:41 >> This is one of my favorite stories this

00:05:41 --> 00:05:43 week. A new study has produced an

00:05:43 --> 00:05:47 incredible map of 16 massive ancient

00:05:47 --> 00:05:49 river drainage systems on Mars.

00:05:49 --> 00:05:52 >> 16 separate systems? Are we talking

00:05:52 --> 00:05:54 about small streams here?

00:05:54 --> 00:05:57 >> Not at all. The study says these systems

00:05:57 --> 00:05:59 are similar in scale to some of the

00:05:59 --> 00:06:02 large drainage basins we see on Earth.

00:06:02 --> 00:06:05 And get this, combined, these 16 systems

00:06:05 --> 00:06:07 transported nearly half of all the

00:06:07 --> 00:06:10 sediment that was ever moved by rowers

00:06:10 --> 00:06:12 on Mars. They were enormous.

00:06:12 --> 00:06:15 >> Half of all the sediment. That's

00:06:15 --> 00:06:17 mindboggling. It paints a picture of a

00:06:17 --> 00:06:20 very different, very wet ancient Mars.

00:06:20 --> 00:06:22 And I assume this has big implications

00:06:22 --> 00:06:25 for the search for life. Absolutely. The

00:06:25 --> 00:06:27 researchers identified these locations

00:06:27 --> 00:06:29 as extremely promising places to search

00:06:30 --> 00:06:33 for signs of past Martian life. If life

00:06:33 --> 00:06:35 ever existed on Mars, these ancient

00:06:35 --> 00:06:38 water carved river beds and deltas are

00:06:38 --> 00:06:40 some of the best places we could

00:06:40 --> 00:06:41 possibly look for evidence.

00:06:41 --> 00:06:43 >> It's incredible to think about how they

00:06:43 --> 00:06:45 piece this together. How do they map

00:06:45 --> 00:06:47 rivers that dried up billions of years

00:06:47 --> 00:06:50 ago? They use highresolution topographic

00:06:50 --> 00:06:52 data from orbiters like the Mars

00:06:52 --> 00:06:55 Reconnaissance Orbiter. Scientists can

00:06:55 --> 00:06:57 trace the faint outlines of river

00:06:57 --> 00:06:59 channels, deltas, and aluvial fans

00:06:59 --> 00:07:02 carved into the landscape. By analyzing

00:07:02 --> 00:07:05 the geology and the minology, looking

00:07:05 --> 00:07:07 for clays and carbonates that typically

00:07:07 --> 00:07:10 form in water, they can confirm these

00:07:10 --> 00:07:13 were indeed liquid water environments.

00:07:13 --> 00:07:15 It's like planetary scale archaeology.

00:07:15 --> 00:07:17 And if we do send her over there, what

00:07:17 --> 00:07:19 kind of bio signatures would they look

00:07:19 --> 00:07:21 for? Not fossils, I imagine.

00:07:21 --> 00:07:24 >> Probably not complex fossils. They'd be

00:07:24 --> 00:07:27 searching for chemical bio signatures,

00:07:27 --> 00:07:29 specific organic molecules or isotopic

00:07:29 --> 00:07:32 ratios that are difficult to explain

00:07:32 --> 00:07:34 through non-biological processes.

00:07:34 --> 00:07:37 Finding preserved microbial mats or

00:07:37 --> 00:07:39 stroalite like structures would be the

00:07:39 --> 00:07:42 absolute jackpot. But chemical traces

00:07:42 --> 00:07:44 are a more likely target. Well, let's

00:07:44 --> 00:07:46 hope a future rover gets to visit one of

00:07:46 --> 00:07:48 those spots. Okay, while Mars' water is

00:07:48 --> 00:07:51 long gone, our own star is incredibly

00:07:51 --> 00:07:53 active right now.

00:07:53 --> 00:07:56 >> That's an understatement. The sun just

00:07:56 --> 00:07:59 unleashed a powerful X1.9 class solar

00:07:59 --> 00:08:00 flare.

00:08:00 --> 00:08:03 >> And as a reminder for everyone, X-class

00:08:03 --> 00:08:05 flares are the biggest and most

00:08:05 --> 00:08:07 energetic category. This was a major

00:08:08 --> 00:08:08 event.

00:08:08 --> 00:08:12 >> It was. It erupted from a newly emerged

00:08:12 --> 00:08:14 sunspot region and caused a strong

00:08:14 --> 00:08:17 shortwave radio blackout over Australia

00:08:17 --> 00:08:19 and the surrounding region.

00:08:19 --> 00:08:21 >> But that's not even the main event, is

00:08:21 --> 00:08:23 it? There's something bigger on the

00:08:23 --> 00:08:24 horizon.

00:08:24 --> 00:08:26 >> Correct. The sunspot region that caused

00:08:26 --> 00:08:29 this flare is concerning. But an even

00:08:29 --> 00:08:32 larger and more complex region is now

00:08:32 --> 00:08:35 rotating into an earth-facing position.

00:08:35 --> 00:08:37 This is the very same sunspot that was

00:08:37 --> 00:08:40 responsible for the powerful flares and

00:08:40 --> 00:08:42 incredible aurora displays we saw last

00:08:42 --> 00:08:43 month.

00:08:43 --> 00:08:46 >> So, space weather forecasters are

00:08:46 --> 00:08:48 watching it very, very closely. We could

00:08:48 --> 00:08:51 be in for another active period.

00:08:51 --> 00:08:54 >> Indeed. And it's important to remember

00:08:54 --> 00:08:56 the potential impact. A strong

00:08:56 --> 00:08:59 earthdirected coronal mass ejection,

00:08:59 --> 00:09:01 which often accompanies these big

00:09:01 --> 00:09:03 flares, could disrupt our power grids,

00:09:03 --> 00:09:06 damage satellites, and interfere with

00:09:06 --> 00:09:09 GPS and communications. We're far more

00:09:09 --> 00:09:11 technologically dependent now than we

00:09:11 --> 00:09:12 were during the last major solar

00:09:12 --> 00:09:14 maximum.

00:09:14 --> 00:09:16 >> So, this isn't just about pretty

00:09:16 --> 00:09:18 auroras. There's a real need for

00:09:18 --> 00:09:20 accurate space weather forecasting to

00:09:20 --> 00:09:23 protect our infrastructure.

00:09:23 --> 00:09:26 >> Exactly. Agencies like Noah's Space

00:09:26 --> 00:09:28 Weather Prediction Center work around

00:09:28 --> 00:09:31 the clock to monitor the sun. Their

00:09:31 --> 00:09:33 warnings give satellite operators time

00:09:33 --> 00:09:36 to put their spacecraft into safe modes

00:09:36 --> 00:09:38 and utility companies time to prepare

00:09:38 --> 00:09:40 their grids for potential geomagnetic

00:09:40 --> 00:09:43 disturbances. It's a critical and often

00:09:43 --> 00:09:45 unseen line of defense.

00:09:45 --> 00:09:48 >> Definitely. Now, all this activity we've

00:09:48 --> 00:09:51 discussed, the launches, the satellites,

00:09:51 --> 00:09:54 the debris, it all leads into our final

00:09:54 --> 00:09:56 story, which is about finding a

00:09:56 --> 00:10:00 sustainable way to operate in space.

00:10:00 --> 00:10:02 >> Right. The growing problem of space

00:10:02 --> 00:10:05 debris. What's the new idea for tackling

00:10:05 --> 00:10:06 it?

00:10:06 --> 00:10:09 >> Experts are strongly advocating for what

00:10:09 --> 00:10:12 they call a circular space economy. The

00:10:12 --> 00:10:14 idea is to move away from the

00:10:14 --> 00:10:16 traditional model of launching

00:10:16 --> 00:10:19 something, using it, and then abandoning

00:10:19 --> 00:10:21 it in orbit.

00:10:21 --> 00:10:23 >> So, it's about applying the principles

00:10:23 --> 00:10:26 of recycling and reuse that we talk

00:10:26 --> 00:10:28 about on Earth, but in orbit.

00:10:28 --> 00:10:31 >> Exactly. This means designing satellites

00:10:31 --> 00:10:34 and spacecraft for durability, for

00:10:34 --> 00:10:37 easier repair, and for potential reuse

00:10:37 --> 00:10:39 or recycling of their components. It

00:10:39 --> 00:10:42 also involves creating multi-purpose

00:10:42 --> 00:10:44 space stations that can serve as inorbit

00:10:44 --> 00:10:47 repair and refueling depots and

00:10:47 --> 00:10:49 developing technologies to actively go

00:10:49 --> 00:10:52 and recover existing debris.

00:10:52 --> 00:10:54 >> It's a huge but necessary shift in

00:10:54 --> 00:10:57 mindset. If we want space to remain

00:10:57 --> 00:11:00 accessible for future generations, we

00:11:00 --> 00:11:03 can't keep treating it like an infinite

00:11:03 --> 00:11:03 resource.

00:11:04 --> 00:11:06 >> That's the core of the argument. It's

00:11:06 --> 00:11:08 about building a sustainable future, not

00:11:08 --> 00:11:10 just for Earth, but for our activities

00:11:10 --> 00:11:11 beyond it.

00:11:11 --> 00:11:14 >> It seems like a monumental task. Are

00:11:14 --> 00:11:17 there companies actively working on this

00:11:17 --> 00:11:19 technology now, or is it still mostly

00:11:19 --> 00:11:20 theoretical?

00:11:20 --> 00:11:23 >> Oh, it's very much moving from theory to

00:11:23 --> 00:11:25 practice. You have companies like

00:11:25 --> 00:11:27 Astroscale developing satellites

00:11:27 --> 00:11:30 designed to capture and de-orbit space

00:11:30 --> 00:11:32 debris. Others are working on robotic

00:11:32 --> 00:11:35 arms for inorbit servicing to repair and

00:11:35 --> 00:11:38 refuel existing satellites, extending

00:11:38 --> 00:11:41 their operational lives. Even NASA is

00:11:41 --> 00:11:43 investing in technologies for inspace

00:11:43 --> 00:11:46 manufacturing and assembly, which

00:11:46 --> 00:11:48 reduces the need to launch massive

00:11:48 --> 00:11:51 monolithic structures from Earth.

00:11:51 --> 00:11:53 >> So, the building blocks are being put in

00:11:53 --> 00:11:55 place. It's not just about cleaning up

00:11:56 --> 00:11:58 the mess, but also about building

00:11:58 --> 00:12:00 smarter from the start. That's the

00:12:00 --> 00:12:03 fundamental shift. Sustainability have

00:12:03 --> 00:12:05 to be part of the design process from

00:12:05 --> 00:12:07 day one. It's an investment that will

00:12:08 --> 00:12:09 pay off by ensuring that the

00:12:09 --> 00:12:12 opportunities of space remain available

00:12:12 --> 00:12:13 for the long term.

00:12:13 --> 00:12:15 >> I couldn't have said it better.

00:12:15 --> 00:12:18 >> A perfect note to end on. And that is

00:12:18 --> 00:12:20 all the time we have for today's journey

00:12:20 --> 00:12:21 through the latest in space and

00:12:22 --> 00:12:23 astronomy.

00:12:23 --> 00:12:25 >> From near-earth challenges to the grand

00:12:25 --> 00:12:27 scale of the universe, there's always

00:12:27 --> 00:12:29 something new to discover. Thank you for

00:12:29 --> 00:12:30 tuning in.

00:12:30 --> 00:12:32 >> I'm Avery

00:12:32 --> 00:12:34 >> and I'm Anna. Join us tomorrow for

00:12:34 --> 00:12:37 another episode of Astronomy Daily.

00:12:37 --> 00:12:39 Until then, clear skies everyone and

00:12:39 --> 00:12:41 keep looking up. [music]

00:12:41 --> 00:12:51 [singing]

00:12:51 --> 00:12:55 Stories [music] told.