Webb's Cosmic Discoveries, Space Station Updates, and New Theories on Life's Emergence: S04E40

0:00 Speaker 1: Hello, and welcome to Astronomy Daily. I'm your host, Anna,

0:04 Speaker 1: and we have a big lineup of space discoveries and

0:06 Speaker 1: breakthroughs to share with you. Today, we'll journey beyond Neptune,

0:10 Speaker 1: where the James Web Space Telescope has made remarkable findings

0:13 Speaker 1: about mysterious objects in our Solar System's outer reaches. We'll

0:18 Speaker 1: hear from astronauts aboard the International Space Station who want

0:21 Speaker 1: to set the record straight about their extended mission. We'll

0:24 Speaker 1: also explore a fascinating new theory that challenges everything we

0:27 Speaker 1: thought we knew about the emergence of intelligent life in

0:30 Speaker 1: the universe. Plus, we'll examine groundbreaking analysis from asteroid venue samples,

0:35 Speaker 1: peek into Earth's surprisingly dynamic inner core, and look at

0:39 Speaker 1: innovative new technology for exploring low gravity environments. Strap in

0:43 Speaker 1: for an exciting journey through the latest developments in space

0:46 Speaker 1: science and exploration. Let's get started. NASA's James Web Space

0:51 Speaker 1: Telescope has revolutionized our understanding of trans Neptunian objects, those

0:55 Speaker 1: mysterious celestial bodies orbiting beyond Neptune's path. In an unprecedented study,

1:01 Speaker 1: Web has provided the first detailed look at the composition

1:03 Speaker 1: of these distant objects, revealing surprising new insights about our

1:07 Speaker 1: solar system's formation. Trans Neptunian objects, or TNOs, include everything

1:13 Speaker 1: from dwarf planets like Pluto and Eris to smaller bodies

1:16 Speaker 1: like Aracoth. While scientists have known about these objects since

1:20 Speaker 1: Pluto's discovery in nineteen thirty, we've never been able to

1:23 Speaker 1: study their composition in such detail until now. Using Web's

1:27 Speaker 1: Near infrared spectrograph, scientists have analyzed over seventy five TNOs

1:31 Speaker 1: in the first two years of the telescope's operation. What

1:34 Speaker 1: they found was completely unexpected. These objects can be categorized

1:38 Speaker 1: into three distinct spectral classes based on their surface composition.

1:44 Speaker 1: The first group, dubbed bowl type, shows strong signatures of water, ice,

1:48 Speaker 1: and some carbon dioxide, along with silicate rich dust. The

1:52 Speaker 1: second classification, called double dip, reveals complex organic molecules mixed

1:58 Speaker 1: with carbon dioxide and carbon monocchilide ices. The third group,

2:02 Speaker 1: known as cliff type, contains the most complex organic materials

2:05 Speaker 1: of all, along with compounds like methanol. This classification system

2:10 Speaker 1: isn't just about categorizing space rocks. It's helping scientists piece

2:14 Speaker 1: together the story of our solar system's early days. The

2:18 Speaker 1: theory is that these different compositions reflect where these objects

2:22 Speaker 1: originally formed, with bold types developing closer to the Sun

2:26 Speaker 1: where temperatures were higher, while double dips and cliffs formed

2:30 Speaker 1: in the colder outer regions. Particularly intriguing is that all

2:34 Speaker 1: objects found in undisturbed cold classical orbits belong to the

2:38 Speaker 1: cliff category. This suggests these objects have remained largely unchanged

2:42 Speaker 1: since the Solar System's formation, making them invaluable time capsules

2:46 Speaker 1: of our cosmic history. Web continues to study these fascinating objects,

2:51 Speaker 1: with new observations planned to examine extreme t andos that

2:55 Speaker 1: venture far into interstellar space. These ongoing studies promise to

2:59 Speaker 1: reveal e more about the materials and conditions that shaped

3:02 Speaker 1: our Solar System billions of years ago. Next up, let's

3:07 Speaker 1: pay a visit to the International Space Station for an

3:09 Speaker 1: update from our two favorite astronauts. In recent months, there's

3:13 Speaker 1: been quite a bit of attention on NASA astronauts Sunny

3:16 Speaker 1: Williams and Butch Wilmore, who found themselves on an unexpectedly

3:20 Speaker 1: extended stay aboard the International Space Station. While some media

3:24 Speaker 1: outlets have painted this as a story of stranded astronauts,

3:27 Speaker 1: the reality is quite different from these dramatic headlines. The

3:30 Speaker 1: duo originally launched on Boeing Starliner spacecraft for what was

3:34 Speaker 1: planned as a ten day mission. However, when Starliner experienced

3:38 Speaker 1: thruster issues during docking maneuvers, NASA made the decision to

3:42 Speaker 1: adjust their plans. Rather than rushing a solution, they've incorporated

3:46 Speaker 1: Williams and Wilmore into the ongoing crew rotation schedule, specifically

3:50 Speaker 1: as part of SpaceX's Crew nine mission. Both astronauts have

3:54 Speaker 1: been quick to set the record straight about their situation.

3:57 Speaker 1: As Wilmore recently explained to CNN's Anderson Cooper, we don't

4:01 Speaker 1: feel abandoned, we don't feel stuck, we don't feel stranded.

4:05 Speaker 1: In fact, he emphasized that mission extensions are simply part

4:08 Speaker 1: of the job in human spaceflight, where being prepared for

4:11 Speaker 1: contingencies is fundamental to their training. What's particularly noteworthy is

4:16 Speaker 1: that both astronauts have maintained their regular duties throughout this

4:20 Speaker 1: extended stay. Williams has even managed to break the record

4:24 Speaker 1: for most cumulative space walking time by a woman during

4:27 Speaker 1: this period. They've been fully integrated into the station's operations

4:31 Speaker 1: with access to all necessary supplies and equipment. The situation

4:36 Speaker 1: gained additional attention when it became part of a political discussion,

4:39 Speaker 1: but the astronauts have remained focused on their mission. They're

4:43 Speaker 1: now scheduled to return to Earth in March following the

4:46 Speaker 1: arrival of Crew ten. As Wilmore puts it, they're not stranded.

4:50 Speaker 1: They're prepared and committed, which is exactly what you'd expect

4:54 Speaker 1: from seasoned space professionals. Both Williams and Wilmore, veterans of

4:58 Speaker 1: previous long duration space mission, have expressed their continued enjoyment

5:02 Speaker 1: of life in orbit. As Williams noted, it's just amazing

5:06 Speaker 1: how quickly you readapt to life in space. She even

5:10 Speaker 1: admitted that when the time comes to return home, they'll

5:13 Speaker 1: likely feel a touch of sadness at leaving their weightless

5:15 Speaker 1: environment behind. And just a little side note, how famous

5:19 Speaker 1: has that hair become? All right, let's get back on track.

5:23 Speaker 1: New research from Penn State is challenging our long held

5:25 Speaker 1: assumptions about the likelihood of intelligent life in the universe.

5:29 Speaker 1: For decades, scientists believe that humanity's emergence was an incredibly

5:33 Speaker 1: rare cosmic accident, But this fresh perspective suggests something quite different.

5:39 Speaker 1: The traditional view, known as the hard steps theory, argued

5:42 Speaker 1: that the evolution of intelligent life required an unlikely series

5:46 Speaker 1: of fortunate events. However, this new study proposes that intelligence

5:51 Speaker 1: might be more of an inevitable outcome of planetary evolution,

5:55 Speaker 1: both on Earth and potentially on other worlds. The researchers

5:59 Speaker 1: explain that earth environment wasn't always hospitable to complex life forms. Instead,

6:04 Speaker 1: it evolved through distinct phases, creating what they call windows

6:08 Speaker 1: of habitability. For instance, the development of complex animal life

6:12 Speaker 1: required specific oxygen levels in the atmosphere. This didn't happen

6:15 Speaker 1: by chance, it was a natural consequence of photosynthesizing microbes

6:20 Speaker 1: gradually changing Earth's atmosphere over time. What's particularly intriguing is

6:25 Speaker 1: their suggestion that humans didn't evolve early or late in

6:28 Speaker 1: Earth's history, but right on time when conditions were finally suitable.

6:33 Speaker 1: As Dan Mills, one of the study's authors, explains, it

6:36 Speaker 1: may simply be a matter of time before other planets

6:38 Speaker 1: achieved similar conditions, with some potentially reaching these milestones faster

6:43 Speaker 1: or slower than Earth did. The team, combining expertise from

6:47 Speaker 1: both astrophysics and geobiology argues that we should view evolution

6:52 Speaker 1: through the lens of geological time scales, rather than comparing

6:56 Speaker 1: it to the Sun's lifespan. This shift in perspective suggests

7:00 Speaker 1: that the development of intelligence might be more of a

7:02 Speaker 1: predictable process, unfolding as global conditions allow. This research opens

7:08 Speaker 1: up exciting possibilities about the prevalence of intelligent life in

7:12 Speaker 1: the universe. If intelligence emerges naturally when planetary conditions are right,

7:17 Speaker 1: rather than through an improbable series of accidents, we might

7:21 Speaker 1: not be as alone in the cosmos as we once thought.

7:25 Speaker 1: Next an update from the mission that just keeps on giving.

7:28 Speaker 1: In a remarkable scientific achievement, NASA's Osyrius Rex mission has

7:33 Speaker 1: revealed groundbreaking discoveries from its sample collection of asteroid Benu.

7:37 Speaker 1: The mission, which successfully returned approximately one hundred and twenty

7:41 Speaker 1: grams of pristine asteroid material to Earth last September, is

7:45 Speaker 1: providing unprecedented insights into the early Solar System. Analysis of

7:49 Speaker 1: the samples has yielded an extraordinary finding, the presence of

7:53 Speaker 1: tiny crystals of salt minerals, specifically halite and sylvite. This

7:57 Speaker 1: discovery is particularly significant because halleite is ecx extremely rare

8:00 Speaker 1: in meteorites, having been found in only three out of

8:03 Speaker 1: hundreds of thousands of known specimens on Earth. The presence

8:07 Speaker 1: of these salt minerals suggests that water activity may have

8:10 Speaker 1: once existed on benus parent body. The research team has

8:14 Speaker 1: also identified various other salt minerals, including sodium carbonates, phosphates, sulfates,

8:20 Speaker 1: and fluorides. These minerals typically form through the evaporation of brines,

8:25 Speaker 1: similar to the deposits we see in Earth's salt lakes.

8:28 Speaker 1: This discovery provides compelling evidence of ancient water activity in

8:31 Speaker 1: the earliest days of our solar system, But perhaps even

8:35 Speaker 1: more intriguing is what these salt minerals mean for the

8:38 Speaker 1: potential development of life's building blocks on Earth. These minerals

8:42 Speaker 1: act as catalysts for forming organic compounds such as nucleobases

8:46 Speaker 1: and nucleosides, the fundamental components of biological systems. Indeed, further

8:52 Speaker 1: analysis of the Benuz samples revealed a diverse array of

8:55 Speaker 1: organic compounds, including fourteen of the twenty amino acids found

8:59 Speaker 1: in earth biological processes, as well as all five nucleobases

9:03 Speaker 1: present in RNA and DNA. While this doesn't indicate the

9:07 Speaker 1: presence of life on Benu, it does suggest that the

9:10 Speaker 1: asteroid's parent body once provided an environment conducive to assembling

9:14 Speaker 1: life's essential components. These findings could have significant implications for

9:19 Speaker 1: our understanding of similar environments elsewhere in the Solar System,

9:22 Speaker 1: particularly on bodies like Saturn's moon, Enceladus and the dwarf

9:26 Speaker 1: planet series, both of which are known to have subsurface

9:29 Speaker 1: brine oceans. This pristine sample from Benu continues to offer

9:34 Speaker 1: new insights as researchers delve deeper into its analysis, potentially

9:38 Speaker 1: reshaping our understanding of the early Solar System and the

9:42 Speaker 1: distribution of life's building blocks throughout space. Let's turn our

9:46 Speaker 1: attention to some fascinating new findings about Earth's inner core

9:50 Speaker 1: that are challenging our previous understanding of our planet's deepest layer.

9:54 Speaker 1: Recent research has revealed that the inner core, long thought

9:57 Speaker 1: to be a solid sphere of iron and nickel, is

10:00 Speaker 1: actually far less rigid than scientists previously believed. Deep beneath

10:04 Speaker 1: our feet nearly three thousand miles below the surface, scientists

10:08 Speaker 1: have detected unexpected structural changes in the inner cores near surface.

10:13 Speaker 1: This discovery comes from analyzing seismic waves from one hundred

10:17 Speaker 1: and twenty one repeating earthquakes near the South Sandwich Islands

10:21 Speaker 1: over a period spanning from nineteen ninety one to twenty

10:24 Speaker 1: twenty four. What makes this particularly interesting is how it

10:29 Speaker 1: appears to interact with the outer core, that swirling layer

10:32 Speaker 1: of liquid metal that surrounds it. The turbulent motion of

10:36 Speaker 1: the outer core seems to be capable of actually deforming

10:39 Speaker 1: the inner core, something we hadn't observed happening on human

10:43 Speaker 1: time scales before. These findings have significant implications for our

10:47 Speaker 1: understanding of Earth's magnetic field, which acts as our planet's

10:51 Speaker 1: protective shield against harmful solar radiation. The interaction between the

10:56 Speaker 1: inner and outer core plays a crucial role in generating

10:59 Speaker 1: and maintaining this magnetic field. If the inner core is

11:02 Speaker 1: more malleable than we thought, it could help explain observed

11:06 Speaker 1: variations in the field's strength and stability over time. The

11:09 Speaker 1: research also supports previous observations suggesting that the inner core's

11:14 Speaker 1: rotation isn't constant. Some models indicate it may have slowed

11:18 Speaker 1: or even reverse direction around twenty ten, which aligns with

11:22 Speaker 1: observed changes in seismic wave patterns. This could potentially influence

11:27 Speaker 1: subtle changes in Earth's rotation and even the length of

11:29 Speaker 1: our days. This new understanding of our planet's core is

11:33 Speaker 1: forcing us to reconsider how Earth's internal engine works and

11:37 Speaker 1: opens up exciting new questions about the dynamic processes occurring

11:41 Speaker 1: deep within our planet. In our final science story today,

11:45 Speaker 1: we're looking at an innovative new approach to exploring low

11:48 Speaker 1: gravity environments like asteroids and other celestial bodies. Researchers at

11:53 Speaker 1: UCLA's Robotics and Mechanisms Laboratory have developed a fascinating new

11:57 Speaker 1: robot system called splitter. It's the space and planetary limbed

12:01 Speaker 1: Intelligent Tether Technology exploration robot. What makes Splitter unique is

12:06 Speaker 1: its design. Imagine two small, four legged robots connected by

12:10 Speaker 1: a tether working together like a high tech version of

12:13 Speaker 1: the game Bola. But don't let this simple description fool you.

12:18 Speaker 1: The system employs sophisticated control mechanisms that allow it to

12:22 Speaker 1: move with remarkable stability, even in airless environments. The team

12:27 Speaker 1: chose a jumping locomotion method rather than traditional wheeled rovers

12:31 Speaker 1: because it's much more effective for navigating the jagged, uneven

12:34 Speaker 1: terrain found on asteroids, and unlike flying robots, it doesn't

12:39 Speaker 1: need an atmosphere to operate. Each robot weighs just about

12:42 Speaker 1: ten kilograms on Earth, making them even more agile in

12:45 Speaker 1: low gravity environments. What's particularly clever about Splitter is how

12:49 Speaker 1: it maintains control during movement. The system uses something called

12:53 Speaker 1: inertial morphing, where the robots adjust their leg configurations and

12:57 Speaker 1: tether length to stabilize their motion. This is managed through

13:00 Speaker 1: a sophisticated predictive control system that can calculate exactly how

13:04 Speaker 1: to position each component for optimal stability. The robots can

13:09 Speaker 1: even work together for tasks like exploring cave systems, with

13:13 Speaker 1: one robot anchoring itself while the other repels down using

13:17 Speaker 1: their connecting tether. While Splitter currently exists mainly as a

13:21 Speaker 1: computer model, it represents an exciting new direction in space

13:25 Speaker 1: exploration technology that could one day help us investigate some

13:28 Speaker 1: of the most challenging environments in our Solar system. While

13:33 Speaker 1: that brings us to the end of another fascinating episode

13:36 Speaker 1: of Astronomy Daily. From Web's groundbreaking discoveries beyond Neptune to

13:41 Speaker 1: innovative space exploration robots, we've covered quite a journey through

13:45 Speaker 1: space science today. If you'd like to stay up to

13:48 Speaker 1: date with all these incredible developments in space and astronomy,

13:51 Speaker 1: I encourage you to visit our website at Astronomydaily dot io.

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