S03E208: Moon's Fiery History, Stellar Birth Mysteries, and China's Space Milestones

0:00 Speaker 1: Welcome to Astronomy Daily, your go to source for the

0:03 Speaker 1: latest developments in space and astronomy. I'm Anna, and in

0:06 Speaker 1: today's episode, we'll explore fascinating discoveries about lunar volcanism, Solar

0:11 Speaker 1: system formation, China's space endeavors, and more. Today we've got

0:15 Speaker 1: an exciting lineup of stories that reveal new insights into

0:19 Speaker 1: our cosmic neighborhood, from groundbreaking analysis of Moon samples to

0:23 Speaker 1: fresh understanding of our Sun's birth, plus the latest developments

0:27 Speaker 1: in space exploration and astronomical research. Let's dive into these

0:32 Speaker 1: remarkable discoveries that are reshaping our understanding of the universe.

0:36 Speaker 1: In a groundbreaking discovery, China's Changer's sixth mission has revealed

0:40 Speaker 1: fascinating new details about the Moon's volcanic past. The mission

0:45 Speaker 1: made history this June by becoming the first to retrieve

0:48 Speaker 1: surface samples from the far side of the Moon, the

0:51 Speaker 1: hemisphere that perpetually faces away from Earth. Analysis of these

0:55 Speaker 1: precious lunar samples has uncovered volcanic rock fragments dating back

0:59 Speaker 1: an astounding four point two billion years, with additional samples

1:03 Speaker 1: from two point eight billion years ago. This evidence points

1:06 Speaker 1: to an incredibly long period of volcanic activity on the

1:09 Speaker 1: lunar far side, lasting at least one point four billion

1:12 Speaker 1: years during the Moon's early history. The samples were collected

1:16 Speaker 1: from the South Pole Eightken Basin, an impact crater with

1:19 Speaker 1: the thinnest lunar crust, making it an ideal location for

1:22 Speaker 1: studying ancient volcanic activity. Using advanced radioisotope dating techniques, scientists

1:28 Speaker 1: found that these volcanic rocks originated from different sources of

1:31 Speaker 1: magma in the Moon's mantle, indicating a complex and dynamic

1:35 Speaker 1: volcanic history. What's particularly interesting is how these findings differ

1:39 Speaker 1: from samples previously collected from the Moon's near side during

1:43 Speaker 1: earlier missions. The changey six samples showed distinct compositional differences,

1:49 Speaker 1: suggesting that volcanic activity varied significantly across the lunar surface.

1:53 Speaker 1: This extensive period of volcanism eventually came to an end

1:56 Speaker 1: as the Moon's internal heat sources diminished. Being smaller than Earth,

2:01 Speaker 1: the Moon cooled more rapidly, and its volcanic activity gradually

2:05 Speaker 1: ceased as its mantle temperature dropped below the threshold needed

2:08 Speaker 1: to sustain these dramatic geological processes. These findings not only

2:13 Speaker 1: provide unprecedented insights into the Moon's geological evolution, but also

2:18 Speaker 1: help us better understand how our celestial neighbor transformed from

2:21 Speaker 1: a dynamically active world into the quiet, crater marked satellite

2:26 Speaker 1: we see today. Scientists have made a remarkable breakthrough in

2:30 Speaker 1: understanding the origins of our solar system, pinpointing for the

2:34 Speaker 1: first time how long it took our Sun to form.

2:37 Speaker 1: Through sophisticated analysis of ancient star dust and groundbreaking laboratory experiments,

2:42 Speaker 1: researchers have determined that our star took between ten and

2:45 Speaker 1: twenty million years to come together from a molecular cloud

2:48 Speaker 1: of gas and dust. The discovery was made possible through

2:51 Speaker 1: an innovative experiment at Germany's GSI Helmholtz Center, where scientists

2:56 Speaker 1: successfully observed the rare decay of highly charged thallium into

2:59 Speaker 1: life lead. This observation provided crucial data about radioactive isotopes

3:05 Speaker 1: in stars of different masses and ages, allowing researchers to

3:08 Speaker 1: build a more complete picture of stellar formation. Red giant

3:12 Speaker 1: stars play a particularly important role in this cosmic story.

3:16 Speaker 1: These aging stars are the only places in the universe

3:19 Speaker 1: where certain unstable isotopes of lead are generated. These isotopes

3:24 Speaker 1: then mix into giant clouds of gas and dust, where

3:27 Speaker 1: they begin to decay. Our sun formed from such a

3:29 Speaker 1: cloud and some of the earliest solid fragments trapped this lead,

3:34 Speaker 1: effectively creating a time stamp that researchers could use to

3:37 Speaker 1: determine the formation period. What makes this discovery particularly significant

3:43 Speaker 1: is that it's the first time scientists have been able

3:45 Speaker 1: to provide a concrete estimate for how long this process took.

3:50 Speaker 1: The research could have far reaching implications for our understanding

3:54 Speaker 1: of how other solar systems develop and how planets form

3:57 Speaker 1: around their parent stars. This timeline of ten to twenty

4:00 Speaker 1: million years might seem incredibly long by human standards, but

4:04 Speaker 1: in cosmic terms, it represents a relatively brief period in

4:08 Speaker 1: the four point six billion year history of our solar system.

4:12 Speaker 1: The findings provide a crucial piece of the puzzle in

4:14 Speaker 1: understanding how our cosmic neighborhood came to be. China's space

4:18 Speaker 1: program has marked another significant milestone with the successful launch

4:23 Speaker 1: and docking of their Tianzho eight cargo spacecraft at the

4:26 Speaker 1: Tiangong Space Station. The spacecraft lifted off from the wen

4:30 Speaker 1: Chong Spaceport aboard a long March seventh rocket and completed

4:34 Speaker 1: its journey to the station in just over three hours.

4:37 Speaker 1: This mission carried approximately six thousand kilograms of vital supplies,

4:42 Speaker 1: most of which will support both the current Shenzho nineteen

4:45 Speaker 1: crew and the upcoming Shenzho twenty mission. But what makes

4:50 Speaker 1: this delivery particularly fascinating is the inclusion of four hundred

4:53 Speaker 1: and fifty eight kilograms of scientific materials, including some groundbreaking

4:58 Speaker 1: experiments that could shape the future of lunar exploration. One

5:02 Speaker 1: of the most intriguing experiments aboard Chianzho eight involves a

5:06 Speaker 1: set of experimental bricks manufactured from simulated lunar soil. These

5:11 Speaker 1: bricks will be exposed to the harsh environment of space

5:13 Speaker 1: for about three years, subjected to intense radiation, extreme temperature fluctuations,

5:19 Speaker 1: and the vacuum of space. After their prolonged exposure, they'll

5:23 Speaker 1: be returned to Earth for detailed analysis, providing crucial data

5:26 Speaker 1: for China's ambitious plans to construct habitats on the Moon

5:30 Speaker 1: as part of their International Lunar Research Station project planned

5:33 Speaker 1: for the twenty thirties. The Tianzho eight spacecraft itself represents

5:38 Speaker 1: an advancement in cargo delivery capabilities, featuring an additional one

5:42 Speaker 1: hundred and two kilograms of payload capacity compared to its predecessors.

5:46 Speaker 1: This improvement in cargo capacity demonstrates China's growing expertise in

5:50 Speaker 1: space logistics and their commitment to maintaining a permanent presence

5:54 Speaker 1: in orbit. This mission forms part of China's broader vision

5:58 Speaker 1: for the Tiangong Space Date, which they plan to operate

6:02 Speaker 1: for at least a decade. Their ambitious plans include expanding

6:05 Speaker 1: the current three module configuration to six modules and adding

6:09 Speaker 1: a co orbital space telescope called Suntian in the coming years.

6:14 Speaker 1: These developments highlight China's increasing capabilities in space exploration and

6:18 Speaker 1: their determination to establish a significant presence beyond Earth's atmosphere.

6:24 Speaker 1: There's been a lot of interest in UFOs this week,

6:26 Speaker 1: and there's more to report. The Department of Defense has

6:29 Speaker 1: just released its annual report on Unidentified Anomalist Phenomena or UAP,

6:34 Speaker 1: revealing some fascinating findings from their ongoing investigations. The report

6:39 Speaker 1: covers sightings and incidents from May twenty twenty three through

6:42 Speaker 1: June twenty twenty four, building on previous data to create

6:45 Speaker 1: a comprehensive analysis of over one thousand, six hundred cases.

6:50 Speaker 1: One of the most notable aspects of the report is

6:53 Speaker 1: that the All Domain Anomaly Resolution Office or ARO, has

6:57 Speaker 1: found no evidence linking these phenomena to foreign adversaries. However,

7:02 Speaker 1: they acknowledge that their ability to resolve cases continues to

7:05 Speaker 1: be limited by the lack of timely and actionable sensor data.

7:09 Speaker 1: To address this challenge, AARO has begun implementing new detection capabilities,

7:15 Speaker 1: including a prototype sensor system called Gremlin. This system, designed

7:20 Speaker 1: specifically for detecting, tracking, and characterizing UAP, has already demonstrated

7:25 Speaker 1: its functionality during a test event in March twenty twenty four.

7:29 Speaker 1: The next phase involves a ninety day pattern of life

7:32 Speaker 1: collection at a site of national security interest. The office

7:36 Speaker 1: is taking a rigorous scientific approach to these investigations, emphasizing

7:40 Speaker 1: the importance of documenting and analyzing each report through a

7:44 Speaker 1: data driven framework. They're also expanding their collaborative efforts, working

7:49 Speaker 1: with military and technical partners to optimize sensor requirements and

7:54 Speaker 1: improve information sharing processes. Looking beyond domestic borders, AARO is

8:00 Speaker 1: actively engaging with international partners to share information and develop

8:04 Speaker 1: best practices for resolving UAP cases. They're also fostering partnerships

8:09 Speaker 1: across government agencies, academia, and commercial communities to enhance their

8:14 Speaker 1: technological capabilities and analytical tools. This systematic approach to investigating

8:20 Speaker 1: UAP represents a significant shift in how these phenomena are

8:23 Speaker 1: being studied, moving from speculation to scientific methodology. The emphasis

8:28 Speaker 1: on data collection and analysis suggests a serious commitment to

8:32 Speaker 1: understanding these unexplained occurrences while maintaining a focus on national

8:36 Speaker 1: security and air safety. While on the subject of UFOs

8:40 Speaker 1: and alien life, here's a story that won't go away.

8:44 Speaker 1: A fascinating new perspective on NASA's historic Viking Mars missions

8:48 Speaker 1: has emerged, suggesting we might need to fundamentally rethink our

8:51 Speaker 1: approach to searching for life on the Red planet. According

8:55 Speaker 1: to astrobiologist Dirk Schultzemakuch from the Technicia Universitat Berlin, the

9:00 Speaker 1: Viking Landers may have actually discovered Martian life back in

9:03 Speaker 1: nineteen seventy five, but ironically might have accidentally killed it

9:07 Speaker 1: in the process of looking for it. The Viking missions,

9:11 Speaker 1: which marked humanity's first successful landing on Mars, conducted experiments

9:16 Speaker 1: designed to detect microbial life by adding water and nutrients

9:20 Speaker 1: to Martian soil samples. While these tests initially showed some

9:23 Speaker 1: positive signals for biological activity, most scientists ultimately concluded the

9:28 Speaker 1: results were either negative or inconclusive. However, Schultze Makucha's research,

9:35 Speaker 1: drawing from studies in Earth's Atacama Desert, suggests that any

9:38 Speaker 1: life adapted to Mars's extremely arid conditions would be highly

9:43 Speaker 1: sensitive to liquid water. Just as desert microbes on Earth

9:46 Speaker 1: have evolved to survive with minimal moisture, Martian organisms would

9:50 Speaker 1: likely be adapted to their planet's ultra dry environment. In fact,

9:55 Speaker 1: when the Atacama Desert experienced unusual heavy rainfall, scientists observed

9:59 Speaker 1: that up to eighty percent of its indigenous bacteria died

10:03 Speaker 1: from the sudden water exposure. This insight raises an intriguing

10:07 Speaker 1: possibility the Viking experiment's water based approach might have been

10:11 Speaker 1: too much of a good thing. Rather than following the

10:14 Speaker 1: traditional follow the water strategy, Schulzemkutch suggests future Mars missions

10:20 Speaker 1: should consider a follow the salt's approach. This is because

10:24 Speaker 1: certain salts can help organisms extract tiny amounts of water

10:27 Speaker 1: directly from the atmosphere, a survival strategy that would be

10:31 Speaker 1: crucial in Mars's harsh environment. Looking ahead, this research emphasizes

10:36 Speaker 1: the importance of developing more nuanced approaches to detecting extraterrestrial life,

10:41 Speaker 1: ones that take into account the specific environmental conditions of

10:45 Speaker 1: other worlds, rather than relying solely on Earth based assumptions.

10:50 Speaker 1: Time for one last story Today, a fascinating new study

10:53 Speaker 1: has revealed significant flaws in our understanding of massive stars

10:57 Speaker 1: and their explosive deaths as supernovae. Using an innovative experimental approach,

11:03 Speaker 1: scientists at Michigan State University's Facility for Rare Isotope Beams

11:06 Speaker 1: have uncovered evidence that challenges our current models of stellar evolution.

11:10 Speaker 1: The research focused on iron sixty, a rare and unstable

11:14 Speaker 1: isotope that forms inside massive stars and gets scattered across

11:18 Speaker 1: the galaxy during supernova explosions. What makes this isotope particularly

11:23 Speaker 1: interesting is its remarkably long half life of over two

11:27 Speaker 1: million years, allowing it to serve as a lasting signature

11:31 Speaker 1: of ancient stellar explosions. The team developed a groundbreaking method

11:35 Speaker 1: called the beta OSLO method to study these unstable isotopes.

11:40 Speaker 1: Overcoming the significant challenges of working with such short lived materials.

11:44 Speaker 1: Their finding suggests that the production of iron sixty inside

11:48 Speaker 1: massive stars occurs at nearly twice the rate predicted by

11:51 Speaker 1: current theoretical models. This discovery points to fundamental flaws in

11:56 Speaker 1: our understanding of how massive stars operate, and eventually, the

12:01 Speaker 1: researchers suggest that existing models may need significant revisions, particularly

12:05 Speaker 1: in areas such as stellar rotation rates and the conditions

12:08 Speaker 1: required for stars to go supernova. These findings don't just

12:12 Speaker 1: represent an isolated discrepancy. They potentially impact our broader understanding

12:17 Speaker 1: of stellar evolution, element formation, and the chemical enrichment of galaxies.

12:23 Speaker 1: The team's work suggests that the internal workings of massive

12:26 Speaker 1: stars may be quite different from what we've long assumed.

12:30 Speaker 1: This research marks another reminder of how much we still

12:33 Speaker 1: have to learn about the universe's most powerful stellar engines.

12:37 Speaker 1: As we continue to refine our understanding of massive stars

12:40 Speaker 1: and their explosive deaths, we may need to revise many

12:43 Speaker 1: of our assumptions about stellar evolution and the processes that

12:46 Speaker 1: create the heavy elements essential for life in the universe.

12:51 Speaker 1: And that's it for today's edition of Astronomy Daily. If

12:54 Speaker 1: you're looking for even more space news, try visiting our

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13:22 Speaker 1: up and wondering about the mysteries of our cosmic neighborhood.

13:25 Speaker 1: This has been Anna with Astronomy Daily, Star Starz