- Largest Black Hole Merger Detected: Dive into the monumental discovery of the largest black hole merger ever observed, known as GW 231123. This event, detected by the LIGO gravitational wave observatories, has resulted in a new black hole approximately 225 times the mass of our Sun, challenging current theories on black hole formation. Join us as we explore the implications of this discovery and what it means for our understanding of the cosmos.
- - AX4 Mission Wrap-Up: We provide a recap of the successful AX4 mission, where a diverse crew of astronauts returned safely from the International Space Station. This mission marks a significant step in NASA's vision for a thriving low Earth orbit economy, showcasing international collaboration and the importance of commercial space travel.
- - Ancient Lunar Meteorite Discovery: Uncover the secrets of a rare lunar meteorite, Northwest Africa 16286, that is rewriting the Moon's volcanic history. This 2.35 billion-year-old rock reveals hidden volcanic processes that challenge our understanding of the Moon's geological past, highlighting the value of lunar meteorites in expanding our knowledge of the Moon.
- - Opportunity to Own Martian History: Learn about the upcoming auction of NWA 16788, the largest known Martian meteorite on Earth, expected to fetch up to $4 million. This extraordinary specimen offers a unique opportunity to own a piece of the Red Planet and provides valuable insights into Mars' geological history.
- For more cosmic updates, visit our website at astronomydaily.io. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTube Music Music, 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 Anna signing off. Until next time, keep looking up and stay curious about the wonders of our universe.
Black Hole Merger
[LIGO](https://www.ligo.caltech.edu/)
AX4 Mission
[Axiom Space](https://www.axiomspace.com/)
Lunar Meteorite Discovery
[University of Manchester](https://www.manchester.ac.uk/)
Martian Meteorite Auction
[Sotheby's](https://www.sothebys.com/)
Astronomy Daily
[Astronomy Daily](http://www.astronomydaily.io/)
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00:00:00 --> 00:00:02 Anna: Hello, everyone, and welcome to Astronomy
00:00:02 --> 00:00:05 Daily. I'm your host, Anna, and I'm thrilled
00:00:05 --> 00:00:07 to have you join us for another journey
00:00:07 --> 00:00:10 through the cosmos. Here we dive into the
00:00:10 --> 00:00:12 latest, most fascinating discoveries and
00:00:12 --> 00:00:14 events shaping our understanding of the
00:00:14 --> 00:00:17 universe. Uh, all delivered with a friendly,
00:00:17 --> 00:00:19 accessible approach. Today, we'll start by
00:00:19 --> 00:00:22 exploring the largest black hole merger ever
00:00:22 --> 00:00:24 detected, an event so immense it's
00:00:24 --> 00:00:26 challenging our current theories. Then we'll
00:00:26 --> 00:00:28 look at how private spaceflights are not just
00:00:28 --> 00:00:31 reaching orbit, but also paving the way for a
00:00:31 --> 00:00:34 dynamic commercial space economy. Plus,
00:00:34 --> 00:00:36 we'll uncover the secrets of an ancient lunar
00:00:36 --> 00:00:38 meteorite that's rewriting the Moon's
00:00:38 --> 00:00:41 volcanic history. And finally, we'll discuss
00:00:41 --> 00:00:43 a rare opportunity to own a piece of the Red
00:00:43 --> 00:00:46 Planet. But you will need deep pockets. Stay
00:00:46 --> 00:00:46 tuned.
00:00:48 --> 00:00:50 Let's kick things off with a truly massive
00:00:50 --> 00:00:53 cosmic event. Astronomers have recently
00:00:53 --> 00:00:56 detected the largest black hole merger ever
00:00:56 --> 00:00:58 observed, an incredible event that has
00:00:58 --> 00:01:01 resulted in a new black hole approximately
00:01:01 --> 00:01:03 225 times the mass of our Sun.
00:01:04 --> 00:01:06 This monumental collision, officially named
00:01:06 --> 00:01:09 GW 231123, was picked
00:01:09 --> 00:01:10 up by the LIGO gravitational wave
00:01:10 --> 00:01:13 observatories. Now, you might be wondering,
00:01:13 --> 00:01:15 what exactly are gravitational waves? These
00:01:15 --> 00:01:18 are ripples in the very fabric of spacetime,
00:01:18 --> 00:01:21 first theorized by Albert Einstein in his
00:01:21 --> 00:01:23 General Theory of Relativity. They're caused
00:01:23 --> 00:01:25 by the most violent and energetic events in
00:01:25 --> 00:01:28 the cosmos, like the merging of two massive
00:01:28 --> 00:01:30 black holes. The first direct detection of
00:01:30 --> 00:01:33 these waves happened back in 2015 at the US
00:01:33 --> 00:01:35 Laser Interferometer Gravitational Wave
00:01:35 --> 00:01:38 Observatory, or LIGO, marking a
00:01:38 --> 00:01:41 groundbreaking moment in astrophysics. Since
00:01:41 --> 00:01:43 then, gravitational wave observatories have
00:01:43 --> 00:01:45 truly opened a new window to the universe,
00:01:45 --> 00:01:48 detecting hundreds of black hole mergers. The
00:01:48 --> 00:01:50 LVK Network of Detectors, which is a
00:01:50 --> 00:01:52 collaboration between ligo, the Virgo
00:01:52 --> 00:01:55 detector in Italy and KAGRA in Japan, has
00:01:55 --> 00:01:58 alone spotted about 300 such events in just
00:01:58 --> 00:02:00 the last 10 years. The newest and
00:02:00 --> 00:02:02 largest discovery, GW23
00:02:03 --> 00:02:05 1123, was detected on
00:02:05 --> 00:02:08 November 23, 2023.
00:02:08 --> 00:02:10 Scientists poring over the data have
00:02:10 --> 00:02:12 determined that this event involved the
00:02:12 --> 00:02:15 collision of two individual black holes, each
00:02:15 --> 00:02:18 incredibly massive, ranging from 100
00:02:18 --> 00:02:20 to 140 times the size of our Sun.
00:02:21 --> 00:02:23 To give you some perspective, the previous
00:02:23 --> 00:02:25 record holder for a black hole merger, known
00:02:25 --> 00:02:28 as GW190521,
00:02:29 --> 00:02:31 involved black holes with a combined mass of
00:02:31 --> 00:02:34 140 times that of the Sun. So this new
00:02:34 --> 00:02:37 detection is a significant leap. The findings
00:02:37 --> 00:02:39 and their implications are being presented at
00:02:39 --> 00:02:42 major international conferences, highlighting
00:02:42 --> 00:02:45 just how important this discovery is. Mark
00:02:45 --> 00:02:47 Hannam, a member of the LVK
00:02:47 --> 00:02:49 collaboration from Cardiff University in
00:02:49 --> 00:02:52 Wales notes that this is the most
00:02:52 --> 00:02:54 massive black hole binary we've observed
00:02:54 --> 00:02:57 through gravitational waves, and it presents
00:02:57 --> 00:02:59 a real challenge to our understanding of
00:02:59 --> 00:03:01 black hole formation. He explains that black
00:03:01 --> 00:03:04 holes of this immense size are not easily
00:03:04 --> 00:03:06 accounted for by standard stellar evolution
00:03:06 --> 00:03:09 models. One exciting possibility is that
00:03:09 --> 00:03:11 these colossal black holes actually
00:03:11 --> 00:03:14 formed through earlier sequential mergers
00:03:14 --> 00:03:17 of smaller black holes. Imagine a
00:03:17 --> 00:03:19 cosmic game of billiards. But with black
00:03:19 --> 00:03:22 holes, gravitational wave observations
00:03:22 --> 00:03:25 like GW 231123 are incredibly
00:03:25 --> 00:03:27 valuable because they allow astronomers to
00:03:27 --> 00:03:30 observe phenomena that truly test the limits
00:03:30 --> 00:03:32 of known physics. Charlie Hoy,
00:03:33 --> 00:03:35 another LVK member from the UK's University
00:03:35 --> 00:03:38 of Portsmouth, points out that the black
00:03:38 --> 00:03:40 holes appear to be spinning very rapidly,
00:03:40 --> 00:03:43 near the limit allowed by Einstein's theory
00:03:43 --> 00:03:46 of general relativity. This rapid spin makes
00:03:46 --> 00:03:48 the signal incredibly complex and difficult
00:03:48 --> 00:03:50 to model and interpret, serving as an
00:03:50 --> 00:03:52 excellent case study for pushing forward the
00:03:52 --> 00:03:55 development of theoretical tools. The
00:03:55 --> 00:03:57 scientific community recognizes that
00:03:57 --> 00:03:59 unraveling this intricate signal will take
00:03:59 --> 00:04:02 time. Gregorio Carullo from the University of
00:04:02 --> 00:04:05 Birmingham, uk, suggests it will take years
00:04:05 --> 00:04:07 for the community to fully unravel this
00:04:07 --> 00:04:09 intricate signal pattern and all its
00:04:09 --> 00:04:12 implications. While a black hole
00:04:12 --> 00:04:14 merger remains the most likely explanation,
00:04:14 --> 00:04:16 he hints that more complex scenarios could be
00:04:16 --> 00:04:18 the key to deciphering its unexpected
00:04:18 --> 00:04:21 features. Ultimately, as Dave
00:04:21 --> 00:04:23 Reitze, the Executive Director of ligo, puts
00:04:23 --> 00:04:26 it, this observation once again demonstrates
00:04:26 --> 00:04:28 how gravitational waves are uniquely
00:04:28 --> 00:04:30 revealing the fundamental and exotic nature
00:04:30 --> 00:04:33 of black holes throughout the universe.
00:04:34 --> 00:04:36 It's truly a thrilling time to be studying
00:04:36 --> 00:04:39 the cosmos, moving from the
00:04:39 --> 00:04:42 distant cosmos to our orbital neighborhood.
00:04:42 --> 00:04:44 We have a quick wrap up to our coverage of
00:04:44 --> 00:04:47 the private AX4 mission to the International
00:04:47 --> 00:04:50 Space Station. AXIOM Mission 4, the
00:04:50 --> 00:04:52 fourth NASA supported private astronaut
00:04:52 --> 00:04:54 mission, has successfully completed its
00:04:54 --> 00:04:57 flight. This endeavor is a crucial part of
00:04:57 --> 00:05:00 NASA's strategy to to foster a vibrant low
00:05:00 --> 00:05:02 Earth orbit economy and build operational
00:05:02 --> 00:05:05 knowledge for future commercial space
00:05:05 --> 00:05:07 stations. The four person crew
00:05:07 --> 00:05:10 safely returned to Earth, splashing down off
00:05:10 --> 00:05:13 the coast of California aboard a SpaceX
00:05:13 --> 00:05:15 Dragon spacecraft. The international team
00:05:15 --> 00:05:18 included Peggy Whitson from Axiom Space,
00:05:18 --> 00:05:20 Shubhanshu Shukla from the Indian Space
00:05:20 --> 00:05:23 Research Organization, Slawosz Uznanski
00:05:23 --> 00:05:26 Wisniewski of Poland and Tibor Kapu from
00:05:26 --> 00:05:29 Hungary. They spent about two and a half
00:05:29 --> 00:05:32 weeks in space, having launched on June 25
00:05:32 --> 00:05:34 from NASA's Kennedy Space center and
00:05:34 --> 00:05:37 undocking on July 14. During
00:05:37 --> 00:05:39 their time on the ISS, the crew conducted
00:05:39 --> 00:05:42 approximately 60 science experiments along
00:05:42 --> 00:05:44 with educational outreach and commercial
00:05:44 --> 00:05:46 activities, returning valuable research,
00:05:46 --> 00:05:49 including NASA cargo, back to Earth.
00:05:49 --> 00:05:51 This mission truly highlighted global
00:05:51 --> 00:05:54 collaboration. It fulfilled a commitment by
00:05:54 --> 00:05:55 President Trump and Indian Prime Minister
00:05:55 --> 00:05:58 Narendra Modi to send the first ISRO
00:05:58 --> 00:06:01 astronaut to the station, involving five
00:06:01 --> 00:06:04 joint science investigations. It also
00:06:04 --> 00:06:06 carried the first astronauts from Poland and
00:06:06 --> 00:06:08 Hungary to stay aboard the space station.
00:06:09 --> 00:06:11 This successful private flight demonstrates
00:06:11 --> 00:06:14 NASA's vision for a strong economy off
00:06:14 --> 00:06:17 Earth. By purchasing services from commercial
00:06:17 --> 00:06:19 providers, NASA can meet its size, science
00:06:19 --> 00:06:22 and research objectives in microgravity more
00:06:22 --> 00:06:24 efficiently and at a lower cost. This
00:06:24 --> 00:06:27 strategic shift enables the agency to
00:06:27 --> 00:06:29 dedicate more resources and focus on its
00:06:29 --> 00:06:32 ambitious Artemis missions to the moon in
00:06:32 --> 00:06:35 preparation for Mars, while low Earth orbit
00:06:35 --> 00:06:37 continues to serve as an essential training
00:06:37 --> 00:06:39 ground for these deep space explorations.
00:06:40 --> 00:06:42 Now let's turn our attention closer to home,
00:06:42 --> 00:06:45 to our celestial neighbor, the Moon. A
00:06:45 --> 00:06:47 remarkable discovery is rewriting what we
00:06:47 --> 00:06:50 thought we knew about its fiery past A rare
00:06:50 --> 00:06:52 lunar meteorite found in Africa in
00:06:52 --> 00:06:55 2023 is shedding new light on hidden
00:06:55 --> 00:06:57 volcanic processes that shaped the moon long
00:06:57 --> 00:06:59 after its surface was believed to have
00:06:59 --> 00:07:02 cooled. This meteorite, officially
00:07:02 --> 00:07:05 named Northwest Africa 16286,
00:07:05 --> 00:07:08 is an incredible 2.35 billion years
00:07:08 --> 00:07:10 old. Its unique chemical signature has
00:07:10 --> 00:07:12 plummeted a significant gap in our
00:07:12 --> 00:07:15 understanding of the moon's volcanic history.
00:07:16 --> 00:07:18 Researchers from the University of Manchester
00:07:18 --> 00:07:20 unveiled their fascinating results at the
00:07:20 --> 00:07:23 Goldschmidt conference in Prague, detailing
00:07:23 --> 00:07:25 how this ancient rock illuminates the moon's
00:07:25 --> 00:07:28 evolving interior and the surprising
00:07:28 --> 00:07:30 longevity of its volcanic activity.
00:07:31 --> 00:07:34 By carefully measuring lead isotopes, the
00:07:34 --> 00:07:36 team determined that this particular rock
00:07:36 --> 00:07:39 star solidified around 2.35 billion years
00:07:39 --> 00:07:42 ago. This period is especially
00:07:42 --> 00:07:44 interesting because we have almost no other
00:07:44 --> 00:07:47 samples from that specific time. What makes
00:07:47 --> 00:07:49 it even more extraordinary is its unusual
00:07:49 --> 00:07:51 geochemical fingerprint, which sets it apart
00:07:51 --> 00:07:54 from the basalts brought back by the Apollo,
00:07:54 --> 00:07:56 Luna, and Chang' E missions. This
00:07:56 --> 00:07:59 suggests it crystallized from deep source
00:07:59 --> 00:08:01 lava shortly after reaching the lunar
00:08:01 --> 00:08:04 surface. Dr. Joshua Snape, a
00:08:04 --> 00:08:05 research fellow at the University of
00:08:05 --> 00:08:08 Manchester, explained the immense scientific
00:08:08 --> 00:08:11 value of lunar meteorites. While samples
00:08:11 --> 00:08:14 from return missions are invaluable, they are
00:08:14 --> 00:08:17 limited to the immediate landing sites. Lunar
00:08:17 --> 00:08:19 meteorites, however, can be ejected by impact
00:08:19 --> 00:08:21 cratering from anywhere on the moon's
00:08:21 --> 00:08:23 surface, offering a serendipitous glimpse
00:08:23 --> 00:08:25 into areas we couldn't otherwise explore
00:08:25 --> 00:08:27 without the massive expense of a space
00:08:27 --> 00:08:30 mission. This 311 gram
00:08:30 --> 00:08:32 meteorite is a type of lunar volcanic basalt
00:08:32 --> 00:08:35 called olivine ferric basalt, containing
00:08:35 --> 00:08:37 relatively large crystals of the mineral
00:08:37 --> 00:08:39 olivine, along with moderate levels of
00:08:39 --> 00:08:42 titanium and high levels of potassium. Beyond
00:08:42 --> 00:08:44 its unusual age, the study found that its
00:08:44 --> 00:08:47 lead isotope composition, a geochemical
00:08:47 --> 00:08:49 Fingerprint points to an origin in the Moon's
00:08:49 --> 00:08:52 interior with an unusually high uranium to
00:08:52 --> 00:08:54 lead ratio. These chemical clues suggest
00:08:54 --> 00:08:57 ongoing heat generation within the Moon,
00:08:57 --> 00:08:59 likely from radiogenic elements decaying and
00:08:59 --> 00:09:02 producing heat over an extended period. The
00:09:02 --> 00:09:05 age of the sample is particularly exciting
00:09:05 --> 00:09:07 because it effectively bridges an almost
00:09:07 --> 00:09:09 billion year gap in lunar volcanic history.
00:09:10 --> 00:09:12 It's younger than the basalts collected by
00:09:12 --> 00:09:15 the Apollo, Luna and Chang' e 6 missions,
00:09:15 --> 00:09:17 but older than the much younger rocks
00:09:17 --> 00:09:20 retrieved by China's Chang' E5 mission.
00:09:20 --> 00:09:22 Its composition, combined with its age,
00:09:23 --> 00:09:25 indicates that volcanic activity continued on
00:09:25 --> 00:09:28 the Moon throughout this vast timespan. This
00:09:28 --> 00:09:30 unique rock provides new constraints about
00:09:30 --> 00:09:32 when and how volcanic activity occurred on
00:09:32 --> 00:09:35 the Moon, guiding where future sample return
00:09:35 --> 00:09:38 missions might land. From ancient
00:09:38 --> 00:09:40 Moon rocks, we now travel even further to
00:09:40 --> 00:09:42 another familiar neighbor, Mars.
00:09:43 --> 00:09:46 Soon, a unique opportunity will allow someone
00:09:46 --> 00:09:48 here on Earth to own a significant piece of
00:09:48 --> 00:09:50 the red planet. As A.H. sotheby's prepares to
00:09:50 --> 00:09:52 auction off the largest known Martian
00:09:52 --> 00:09:55 meteorite on our world. This extraordinary
00:09:55 --> 00:09:57 Specimen, officially designated NWA
00:09:58 --> 00:10:01 16788, is anticipated to
00:10:01 --> 00:10:03 fetch up to $4 million at the upcoming
00:10:03 --> 00:10:05 auction in New York City. The rarity of such
00:10:05 --> 00:10:08 a find cannot be overstated. Out of more than
00:10:08 --> 00:10:11 77 officially recognized meteorites
00:10:11 --> 00:10:13 discovered on Earth, only about 400, or
00:10:13 --> 00:10:16 roughly 0.6%, originate from Mars.
00:10:16 --> 00:10:19 NWA 16788 itself, uh,
00:10:19 --> 00:10:22 represents an impressive 6.5% of all
00:10:22 --> 00:10:24 Martian material currently known on our
00:10:24 --> 00:10:27 planet. This colossal chunk of Martian rock,
00:10:27 --> 00:10:30 weighing in at just over 54 pounds, was
00:10:30 --> 00:10:32 likely dislodged from Mars by an asteroid
00:10:32 --> 00:10:35 strike, sending it on an incredible journey.
00:10:35 --> 00:10:38 It traveled an astounding 140 million miles
00:10:38 --> 00:10:40 through space before making its dramatic
00:10:40 --> 00:10:43 landing in the Zaharov-Reutt Desert, where it
00:10:43 --> 00:10:45 was discovered in Niger's remote agadez
00:10:45 --> 00:10:47 region in 2023. Cassandra
00:10:47 --> 00:10:50 Hatton, Sotheby's vice chairman of Science
00:10:50 --> 00:10:52 and Natural History, highlighted the sheer
00:10:52 --> 00:10:55 improbability of this journey, stating that
00:10:55 --> 00:10:57 the odds of this getting from there to here
00:10:57 --> 00:11:00 are astronomically small. More than just
00:11:00 --> 00:11:01 a collector's item,
00:11:02 --> 00:11:04 NWA6788 is believed to be
00:11:04 --> 00:11:07 a relative newcomer to Earth, having fallen
00:11:07 --> 00:11:10 from outer space quite recently. This means
00:11:10 --> 00:11:12 it offers a pristine window into the Martian
00:11:12 --> 00:11:15 past. Hatton emphasizes its scientific
00:11:15 --> 00:11:17 significance, calling it not just a
00:11:17 --> 00:11:19 miraculous find, but a massive data set that
00:11:19 --> 00:11:21 can help us unlock the secrets of our
00:11:21 --> 00:11:24 neighbor, the Red Planet. Specimens like
00:11:24 --> 00:11:26 this from the Moon and Mars are considered
00:11:26 --> 00:11:28 among the greatest rarities on our planet,
00:11:28 --> 00:11:31 with Sotheby's noting that all known bits of
00:11:31 --> 00:11:32 both could fit into the cargo hold of a large
00:11:32 --> 00:11:35 suv. It truly is a chance to hold a piece
00:11:35 --> 00:11:37 of another world in your hands.
00:11:38 --> 00:11:40 And to wrap up today, some late breaking news
00:11:40 --> 00:11:42 from Australia's Gilmore Space. They've just
00:11:42 --> 00:11:45 posted the following message on we've
00:11:45 --> 00:11:48 scrubbed our July 16th launch window. Now
00:11:48 --> 00:11:50 targeting the next approved opportunity July
00:11:50 --> 00:11:53 27th. Why? Ops delayed us a day
00:11:53 --> 00:11:55 and current upper wind forecasts have ruled
00:11:55 --> 00:11:57 out a safe launch for the rest of the week.
00:11:57 --> 00:12:00 Team will be back for the 27th of July, and
00:12:00 --> 00:12:01 that brings us to the end of another
00:12:01 --> 00:12:03 fascinating journey through the cosmos here
00:12:03 --> 00:12:06 on Astronomy Daily. Today, we've explored
00:12:06 --> 00:12:07 some truly incredible stories from the
00:12:07 --> 00:12:10 largest black hole merger ever detected,
00:12:10 --> 00:12:13 GW 231123, which is
00:12:13 --> 00:12:15 pushing the limits of our understanding of
00:12:15 --> 00:12:17 these cosmic giants to the successful return
00:12:18 --> 00:12:20 of The Axiom Mission 4 crew, showcasing
00:12:20 --> 00:12:22 the exciting future of commercial space
00:12:22 --> 00:12:25 travel and international collaboration on the
00:12:25 --> 00:12:28 International Space Station. We also delved
00:12:28 --> 00:12:31 into the mysteries of a 2.35 billion
00:12:31 --> 00:12:34 year old lunar meteorite found in Africa,
00:12:34 --> 00:12:37 which is rewriting the volcanic history of
00:12:37 --> 00:12:40 our Moon. And finally, we looked at the
00:12:40 --> 00:12:42 incredible opportunity to own a piece of the
00:12:42 --> 00:12:45 Red Planet with The auction of NWA
00:12:45 --> 00:12:48 16788, the largest Martian
00:12:48 --> 00:12:51 meteorite on Earth. Thank you for tuning in
00:12:51 --> 00:12:54 and joining me, Anna on Astronomy Daily. If
00:12:54 --> 00:12:56 you want to dive deeper into these stories,
00:12:56 --> 00:12:58 sign up for our free daily newsletter or
00:12:58 --> 00:13:01 catch up on all our back episodes, visit our
00:13:01 --> 00:13:03 website at astronomydaily IO.
00:13:04 --> 00:13:06 You can also subscribe to the podcast on
00:13:06 --> 00:13:09 Apple Podcasts, Spotify, YouTube Music, or
00:13:09 --> 00:13:11 wherever you get your podcasts, so you never
00:13:11 --> 00:13:13 miss an episode. Until next time, keep
00:13:13 --> 00:13:13 looking up