April 17, 2025
Exciting Signs of Life Beyond Earth
Astronomy Daily | Space News: S04E92
In this episode of Astronomy Daily, host Anna takes you on an exhilarating exploration of groundbreaking cosmic discoveries that could change our understanding of life in the universe. From compelling evidence of...
Astronomy Daily | Space News: S04E92
In this episode of Astronomy Daily, host Anna takes you on an exhilarating exploration of groundbreaking cosmic discoveries that could change our understanding of life in the universe. From compelling evidence of extraterrestrial life to the complexities surrounding SpaceX's operations, this episode is packed with insights that will ignite your curiosity about the cosmos.
Highlights:
- Strongest Evidence Yet for Extraterrestrial Life: Join us as we delve into the remarkable findings from the James Webb Space Telescope, which suggest the presence of biological compounds in the atmosphere of the exoplanet K218b. Discover how these observations could mark a pivotal moment in our quest to answer the age-old question: Are we alone in the universe?
- SpaceX Landings Suspended in the Bahamas: Learn about the Bahamian government's decision to suspend all SpaceX Falcon 9 rocket landings pending an environmental assessment. We discuss the implications of this sudden halt and the growing regulatory challenges faced by private space companies.
- A Planet Orbiting Two Stars: Explore the discovery of an unprecedented exoplanet orbiting a binary brown dwarf system. This unique configuration challenges existing theories of planetary formation and opens new avenues for understanding the diversity of planetary systems.
- The Universe May Rotate: Uncover a groundbreaking theory suggesting that the entire universe might be rotating, albeit extremely slowly. This hypothesis could help resolve the Hubble tension and deepen our understanding of cosmic expansion.
- Solving the Mystery of Ultra High Energy Cosmic Rays: Discover how scientists may have identified the source of ultra high energy cosmic rays as the mergers of binary neutron stars. This theory provides a new lens through which to study some of the universe's most energetic phenomena.
For more cosmic updates, visit our website at 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 Anna signing off. Until next time, keep looking up and stay curious about the wonders of our universe.
00:00 - Welcome to Astronomy Daily
01:05 - Strongest evidence for extraterrestrial life
10:30 - SpaceX landings suspended in the Bahamas
17:00 - Planet orbiting two stars
22:15 - The universe may rotate
27:30 - Ultra high energy cosmic rays mystery solved
✍️ Episode References
Extraterrestrial Life Findings
[University of Cambridge](https://www.cam.ac.uk/)
SpaceX Suspension News
[Bahamas Government](https://www.bahamas.gov.bs/)
Planet Discovery
[University of Birmingham](https://www.birmingham.ac.uk/)
Universe Rotation Theory
[Royal Astronomical Society](https://www.ras.ac.uk/)
Ultra High Energy Cosmic Rays Research
[New York University](https://www.nyu.edu/)
Astronomy Daily
[Astronomy Daily](http://www.astronomydaily.io/)
Become a supporter of this podcast:
In this episode of Astronomy Daily, host Anna takes you on an exhilarating exploration of groundbreaking cosmic discoveries that could change our understanding of life in the universe. From compelling evidence of extraterrestrial life to the complexities surrounding SpaceX's operations, this episode is packed with insights that will ignite your curiosity about the cosmos.
Highlights:
- Strongest Evidence Yet for Extraterrestrial Life: Join us as we delve into the remarkable findings from the James Webb Space Telescope, which suggest the presence of biological compounds in the atmosphere of the exoplanet K218b. Discover how these observations could mark a pivotal moment in our quest to answer the age-old question: Are we alone in the universe?
- SpaceX Landings Suspended in the Bahamas: Learn about the Bahamian government's decision to suspend all SpaceX Falcon 9 rocket landings pending an environmental assessment. We discuss the implications of this sudden halt and the growing regulatory challenges faced by private space companies.
- A Planet Orbiting Two Stars: Explore the discovery of an unprecedented exoplanet orbiting a binary brown dwarf system. This unique configuration challenges existing theories of planetary formation and opens new avenues for understanding the diversity of planetary systems.
- The Universe May Rotate: Uncover a groundbreaking theory suggesting that the entire universe might be rotating, albeit extremely slowly. This hypothesis could help resolve the Hubble tension and deepen our understanding of cosmic expansion.
- Solving the Mystery of Ultra High Energy Cosmic Rays: Discover how scientists may have identified the source of ultra high energy cosmic rays as the mergers of binary neutron stars. This theory provides a new lens through which to study some of the universe's most energetic phenomena.
For more cosmic updates, visit our website at 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 Anna signing off. Until next time, keep looking up and stay curious about the wonders of our universe.
00:00 - Welcome to Astronomy Daily
01:05 - Strongest evidence for extraterrestrial life
10:30 - SpaceX landings suspended in the Bahamas
17:00 - Planet orbiting two stars
22:15 - The universe may rotate
27:30 - Ultra high energy cosmic rays mystery solved
✍️ Episode References
Extraterrestrial Life Findings
[University of Cambridge](https://www.cam.ac.uk/)
SpaceX Suspension News
[Bahamas Government](https://www.bahamas.gov.bs/)
Planet Discovery
[University of Birmingham](https://www.birmingham.ac.uk/)
Universe Rotation Theory
[Royal Astronomical Society](https://www.ras.ac.uk/)
Ultra High Energy Cosmic Rays Research
[New York University](https://www.nyu.edu/)
Astronomy Daily
[Astronomy Daily](http://www.astronomydaily.io/)
Become a supporter of this podcast:
WEBVTT
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Welcome to Astronomy Daily, your cosmic connection to the stars
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and beyond. I'm anna, and today we have an absolutely
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stellar lineup of space news that you won't want to miss.
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We're diving into what scientists are calling the strongest evidence
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yet for life beyond our Solar System, a discovery that
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could fundamentally change our understanding of our place in the universe.
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We'll also explore why the Bahamas has suspended SpaceX landings
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and take you on a journey to a newly discovered
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planet that orbits two stars in a configuration previously only
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seen in science fiction. Plus, does the entire universe rotate?
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A new theory suggests it might, and this could solve
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one of astronomy's biggest puzzles. And finally, we may have
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cracked the six decade mystery of where the most powerful
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particles in space come from. So strap in as we
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journey through today's cosmic headlines and explore the wonders waiting
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for us among the stars. Let's get started in what
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might be the most exciting astronomical discovery in recent Yearsists
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are reporting what they describe as the strongest evidence yet
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for extraterrestrial life beyond our solar system. A team of
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astrophysicists led by Professor Niku Madusudan from the University of
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Cambridge has made observations using the James Webb Space Telescope
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that could bring us closer to answering humanity's age old question,
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are we alone in the universe. The observations focus on
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a planet called K two eighteen B, which is located
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one hundred and twenty four light years away from Earth
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in the Leo constellation. This planet is significantly larger than Earth,
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nearly nine times as massive and two point six times
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the size, and orbits in what scientists call the habitable
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zone of its star, a cool red dwarf that's less
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than half the size of our Sun. What's truly remarkable
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about these findings is the detection of two chemical compounds
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in the planet's atmosphere, demethyl sulfide or DMS and demethyl
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disulfide or dmds. What makes these chemicals so significut is
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that on Earth there primarily produced by marine phytoplankton microscopic
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marine algae. In other words, they're biological in origin. Professor
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Madhusudan describes this as potentially a tipping point in our
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search for extraterrestrial life, telling reporters decades from now, we
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may look back at this point in time and recognize
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it was when the living universe came within reach. The
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scientific team is being appropriately cautious, however. The findings published
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in the Astrophysical Journal Letters report the signals with what's
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called three sigma significance, meaning there's about a zero point
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three percent probability they occurred by chance. While impressive, this
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falls short of the gold standard for discoveries in physics.
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There are also important questions about whether K two eighteen
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b's overall conditions are favorable to life. The Cambridge team
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suggests the planet could be covered by a vast deep ocean,
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potentially making it the most habitable known world beyond our
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Solar System, but other scientists dispute this interpretation, suggesting it
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might be a gas planet or have oceans made of
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magma rather than water. Doctor Nora Hani, a chemist at
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the University of Berne who wasn't involved in the study,
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points out that there might be alternative explanations for the
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presence of these chemicals. Life is one of the options,
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but it's one among many, she notes, adding that we
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would need to rule out all other possibilities before claiming
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definitive evidence of life. Doctor Joe Barstow from the Open
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University shares this skepticism, saying her skepticism dial for any
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claim relating to evidence of life is permanently turned up
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to eleven. She clarifies that this isn't because she doubts
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extraterrestrial life exists, but because such a profound discovery requires
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an extraordinarily high burden of proof. At one hundred and
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twenty four light years away, we won't be sending probes
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to K two eighteen B anytime soon to confirm these findings. But,
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as Professor Madhusudan points out, astronomy has never been about
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physically visiting distant objects. We're trying to establish if the
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laws of biology are universal in nature. He explains, I
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don't see it as we have to go and swim
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in the water to catch the fish. If confirmed, this
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discovery would represent a monumental shift in our understanding of
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life in the cosmos. Even as a tentative finding, it
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provides compelling evidence that the chemical signatures of life may
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be detectable on distant worlds, opening new frontiers in our
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search for extraterrestrial neighbors in this vast universe. Next up today,
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some not so good news for SpaceX. The Bahamas government
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has announced a significant suspension of all SpaceX Falcon nine
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rocket landings in the country, pending a comprehensive environmental assessment.
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According to Bahamian Director of Communications La Tree Raming, no
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further clearances will be granted until a full environmental assessment
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is reviewed. This decision marks a sudden halt to what
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had been an expanding relationship between the Caribbean nation and
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Elon Musk's private space company. Just two months ago, in February,
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the Bahamian government had approved nineteen more landings throughout twenty
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twenty five, all subject to regulatory approval. Now those plans
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have been put on indefinite hold. The suspension follows a
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concerning incident last month, when a SpaceX Starship spacecraft exploded
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in space minutes after lifting off from Texas. Social media
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videos captured fiery debris streaking through the skies near South
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Florida and the Bahamas after the spacecraft broke up in space.
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According to Bahamian officials, debris from the spacecraft fell into
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the country's airspace though they stated the debris contained no
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toxic materials and wasn't expected to significantly impact marine life
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or water quality. It's important to note that while this
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suspension directly affects the Falcon nine landing program, the incident
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that prompted the review involved SpaceX's larger Starship vehicle. The
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Starship program is separate from the Falcon nine operations that
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had been taking place in Bahamian territory. This development highlights
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the growing complexity of managing space operations as private companies
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like SpaceX dramatically increase the frequency of launches and landings.
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The Bahamas, with its proximity to US launch sites and
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relatively sparse population, had emerged as an attractive location for
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SpaceX's expanding operations. For SpaceX, this suspension creates a significant
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logistical challenge. The company has been working to increase its
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launch cadence and relies on successful rocket recovery to maintain
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its reusable rocket business model. Finding alternative landing sites or
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adjusting mission profiles could impact the company's launch schedule and costs.
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The incident also draws attention to broader concerns about space
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debris and environmental impacts, as space activities increase globally. While
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space agencies and companies have long addressed the issue of
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orbital debris, the potential for launch failures to affect territories
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beneath flight paths is becoming a more pressing regulatory concern.
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As space activities continue to grow and diversify, countries like
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the Bahamas are establishing their own regulatory frameworks to balance
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economic opportunities with environmental protection and safety concerns. This incident
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may well serve as an important precedent for how nations
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handle the complex relationship between commercial space operations and their
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own sovereign interests. If you're a fan of Star Wars,
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this next story is for you. You're probably familiar with
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the iconic double sunset seen from the planet Tattooin. While
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that seemed like pure science fiction, astronomers have actually discovered
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several planets orbiting binary star systems over the years. But
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now they've found something truly unprecedented that pushes our understanding
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of planetary systems even further. A team led by Thomas Baycroft,
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a PhD student at the University of Birmingham, has discovered
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an exoplanet with a configuration never seen before. This planet
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named two M one thy five hundred and ten ab
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b orbits not just any binary star system, but a
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pair of brown dwarfs, objects that are larger than gas
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giant planets but too small to be proper stars. What
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makes this discovery particularly remarkable is the planet's orbit. Unlike
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previously discovered planets around binary stars that typically orbit in
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roughly the same plane as their host stars, this planet
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follows a path that's perpendicular at a right angle to
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the orbit of its two host stars. I am particularly
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excited to be involved in detecting credible evidence that this
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configuration exists, said Baycroft about the discovery, published in Science Advances.
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His colleague, professor Amory Trio, added that a planet orbiting
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not just a binary but a binary brown dwarf, as
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well as being on a polar orbit, is rather incredible
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and exciting. The discovery was actually serendipitous. The team wasn't
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specifically looking for such a planet when they made their
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observations using the ultraviolet and visual Aeshell spectrograph instrument on
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the European Southern Observatory's Very Large telescope in Chile. They
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were actually studying the brown dwarf pair known as two
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M one five hundred ten, which is only the second
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pair of eclipsing Brown dwarfs ever discovered. While observing the
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orbital path of the two Brown dwarfs, the astronomers noticed
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something unusual. The stars were being pushed and pulled in
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ways that couldn't be explained by their interaction alone. After
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reviewing all possible scenarios, they concluded that the only explanation
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consistent with their data was the presence of a planet
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orbiting on a polar axis. This discovery is significant because
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while theoretical models had suggested such configurations were stable and
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planet forming disks on polar orbits around stellar pairs had
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been detected, we lacked concrete evidence that planets could actually
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form and persist in such arrangements. It opens up new
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possibilities for understanding the diversity of planetary systems and challenges
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conventional theories about how planets form. As Professor Triau noted,
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the discovery was serendipitous in the sense that our observations
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were not collected to seek such a planet or orbital configuration.
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As such, it is a big surprise overall. I think
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this shows to US astronomers, but also to the public
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at large. What is possible in the fascinating universe we
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inhabit while we're reporting on surprising discoveries. What if everything
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in the universe is spinning, not just galaxies and planets,
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but the entire cosmos itself. A groundbreaking new study published
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in Monthly Notices of the Royal Astronomical Society suggests this
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might actually be the case. Researchers, including Isfan Saputi from
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the University of Hawaii Institute for Astronomy, have proposed that
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the universe may indeed rotate, just extremely slowly. How slowly
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they estimate it might complete a single rotation once every
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five hundred billion years, which would be far too gradual
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for us to easily detect. This seemingly simple idea could
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help resolve one of astronomy's most persistent puzzles, the hubble tension.
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This problem emerges from the fact that we have two
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different methods of measuring how fast the universe is expanding,
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and frustratingly, they give us different answers. One method examines
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distant exploding stars or supernovae to measure the expansion rate
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over the past few billion years. The other technique analyzes
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the cosmic microwave background radiation, essentially the afterglow of the
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Big Bang, to determine how fast the very early universe
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was expanding some thirteen billion years ago. The discrepancy between
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these two measurements has left astronomers scratching their heads for years.
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Saputi's team took a novel approach. They developed a mathematical
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model of the universe following standard cosmological rules, but with
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one key difference. They added a tiny amount of rotation.
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As Saputi explains, much to our surprise, we found that
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our model with rotation resolves the paradox without contradicting current
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astronomical measurements. The idea draws inspiration from the Greek philosopher
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heraklid Ephesus, who famously said, Panta ray everything moves. So
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Puti's team thought, perhaps Panta cicluti everything turns might also
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be true. What's particularly compelling about this theory is that
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it doesn't violate any known laws of physics. It simply
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introduces a subtle cosmic spin that affects how space expands
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over time in a way that could explain our conflicting measurements.
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The next steps for researchers will be to develop a
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full computer model based on this theory and identify ways
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to detect signs of this slow cosmic rotation. If confirmed,
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this could fundamentally change our understanding of the universe and
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how it has evolved since the Big Bang. We're on
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a bit of a roll today with new discoveries, so
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let's throw one more into the mix. After six decades
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of mystery, scientists may have finally solved one of the
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universe's most perplexing riddles, the origin of ultra high energy
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cosmic ray uhcrs. These extraordinary particles, which were first discovered
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in the nineteen sixties, pack energies more than a million
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times greater than what our most powerful particle accelerators on
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Earth can produce. Until now, their source has remained elusive.
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Physicist Glennis Ferrar from New York University has published a
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groundbreaking paper in Physical Review Letters that offers a compelling explanation.
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Her research suggests these incredibly energetic particles are created during
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the violent merger of binary neutron stars when two of
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these ultra dense stellar remnants collide. According to Ferrar's model,
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the turbulent magnetic fields generated during these catastrophic mergers provide
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the perfect environment for accelerating particles to these mind boggling energies.
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After six decades of effort, the origin of the mysterious
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highest energy particles in the universe may finally have been identified.
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Ferrar notes. What makes this theory particularly elegant is that
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it addresses several long standing puzzles about uhcrs at once.
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It explains the tight correlation between a cosmic rays energy
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and its electric charge, a feature that previous theories struggled
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to account for. It also provides a framework for understanding
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the extraordinary energy of the highest energy cosmic rays that
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have been detected in rare events. The theory suggests these
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particles originate as rare r process elements like xenon and tellurium,
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which are synthesized during neutron star mergers. These same mergers
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also produce gravitational waves, which we've already detected through facilities
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like LEGO and virgo. This connection provides a clear path
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for experimental validation. Scientists can now look for correlations between
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gravitational wave detections and the arrival of ultra high energy
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cosmic rays. They can also analyze UHCR data for the
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chemical signatures of these r process elements. If confirmed, Ferrar's
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work represents a major advancement in our understanding of both
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cosmic rays and neutron star mergers. It gives astronomers and
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physicists a new lens through which to study some of
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the universe's most energetic and violent phenomena, potentially opening windows
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into fundamental physics that we simply cannot replicate in laboratories
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on Earth. Well that's all for today's cosmic journey. Thank
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you for joining me on Astronomy Daily. I'm Anna, your host,
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and I've been delighted to share these fascinating developments from
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across our universe with you. If you're hungry for more
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space news and insights, I invite you to visit our
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