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Join host Stuart Gary for weekly explorations into Astronomy, Space, and Science News, featuring insights from 19 years on Australian Public Radio and industry experts.
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14 NOV 2025 · In this episode of SpaceTime, we uncover groundbreaking findings that could reshape our understanding of the universe's early stars, the Moon's hidden secrets, and the asteroid Vesta's internal structure.
First Stars Detected
Astronomers may have finally glimpsed the universe's first stars, known as Population 3 stars, thanks to observations from NASA's Webb Space Telescope. These luminous giants, formed just 200 million years after the Big Bang, are believed to have ended the cosmic dark ages and initiated the epoch of reionisation. The episode delves into the significance of these findings, which suggest that these stars were formed in small clusters and exhibit extremely low metallicity, challenging previous theories about the early universe.
Secrets of the Moon Revealed
Two NASA studies have provided fascinating insights into the Moon's internal structure through advanced gravity modelling. By analysing data from the GRAIL mission, researchers have created the most detailed gravitational map of the Moon to date, revealing variations linked to tidal deformation. This research offers clues about the Moon's geological history and volcanic activity, particularly highlighting differences between the near and far sides of the Moon.
New Insights into Asteroid Vesta
In a parallel study, scientists examined the asteroid Vesta's structure using data from NASA's Dawn spacecraft. Contrary to earlier beliefs of a layered interior, new measurements suggest Vesta may have a more uniform composition, with only a small core, if any. This revelation challenges long-held assumptions about the formation and evolution of this ancient asteroid.
Euclid Space Telescope's Stellar Nursery Observations
The European Space Agency's Euclid Space Telescope has peered into the dark cloud LDN 1641, uncovering a vibrant stellar nursery filled with young stars. This segment discusses the significance of Euclid's observations, which not only aid in fine-tuning the telescope's capabilities but also contribute to our understanding of star formation and the cosmos.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Astrophysical Journal Letters
Nature
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Transcribed
13 NOV 2025 · In this episode of SpaceTime, we explore significant revelations about the universe's expansion, the Sun's magnetic field, and the current surge in solar weather activity.
The Universe's Expansion Rate is Slowing
A new study has confirmed that the universe's rate of expansion, which began after the Big Bang 13.8 billion years ago, is slowing down. This finding contradicts previous theories suggesting that the expansion was accelerating due to dark energy. We delve into the implications of this research, which indicates that dark energy may be evolving more rapidly than previously understood, potentially marking a paradigm shift in cosmology. The episode discusses various scenarios for the universe's future, including the Big Crunch, Steady State theory, Big Freeze, and Big Rip, and how these new observations could reshape our understanding of cosmic fate.
First Glimpse of the Sun's Polar Magnetic Field
Astronomers have captured their first detailed view of the Sun's polar magnetic field in motion, revealing unexpected rapid movements. The Solar Orbiter spacecraft has provided insights into the Sun's magnetic activity, which follows an 11-year cycle. This segment highlights the significance of the findings, which enhance our understanding of solar dynamics and the implications for space weather.
Current Surge in Space Weather Events
As the Sun reaches solar maximum, astronomers are observing increased solar storm activity, including multiple X-class and M-class solar flares. This segment discusses the effects of coronal mass ejections on Earth, including spectacular auroras and potential disruptions to technology and power grids. We explore the science behind solar flares and their impact on our planet, providing a comprehensive overview of current space weather conditions.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Monthly Notices of the Royal Astronomical Society
Astrophysical Journal Letters
Nature Geoscience
Journal of the American Medical Association
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Transcribed
10 NOV 2025 · In this episode of SpaceTime, we delve into fascinating intersections of geology and astronomy that could reshape our understanding of Earth's history and the cosmos.
Earth's Geology Written in the Stars
A groundbreaking study reveals a compelling connection between the structure of our Milky Way galaxy and the evolution of Earth's crust. Researchers from Curtin University have found that meteorite impacts, influenced by the solar system's journey through the galaxy, have played a significant role in shaping our planet's geology. The episode explores how ancient zircon crystals are providing a unique archive of Earth's interactions with the galaxy, suggesting that astrophysical processes may have directly influenced the continents beneath our feet and the conditions that made life possible.
Taikonaut Stranded in Space
In a dramatic turn of events, three Chinese taikonauts are stranded in orbit after their Shenzhou 20 spacecraft was struck by suspected space junk just hours before their scheduled return to Earth. This segment discusses the implications of the impact, the ongoing assessments by mission managers, and the potential need for a replacement capsule to ensure the crew's safe return. The episode also reflects on past incidents involving space debris and the measures taken to protect the Tiangong Space Station.
The Biggest Supermoon of the Year
Skywatchers around the globe were treated to the biggest supermoon of the year, appearing 7% larger and 30% brighter than a typical full moon. This segment explains the science behind the phenomenon, including the moon's elliptical orbit and its impact on tides. We also discuss how the term "supermoon" became popularised and the frequency of such lunar events, with several more supermoons on the horizon.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Physical Review
https://journals.aps.org/pr/
Nature
https://www.nature.com/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Earth's Geology Written in the Stars
Taikonaut Stranded in Space
The Biggest Supermoon of the Year
Earth's Geology Written in the StarsTaikonaut Stranded in SpaceThe Biggest Supermoon of the Year
Supporters Club
10 NOV 2025 · SpaceTime S28E132 S28E133 S28E134 w/c November 10, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 132 A new study has uncovered a striking link between the structure of our Milky Way galaxy and the evolution of planet Earth's crust. *Taikonauts stranded in space following space junk impact Three Chinese taikonauts are stranded in orbit after suspected space junk hit their Shenzhou-20 spacecraft just hours before it was slated to undock from China’s Tiangong space station and return to Earth. *Biggest Supermoon of the year Sky watchers have enjoyed a spectacular perigee full moon. The biggest so called Supermoon of the year appeared to be 7 percent larger and 30 percent brighter than the average full moon. *The Science Report Warnings that Australian marsupials are being heavily contaminated with synthetic forever chemicals. Ageing populations set to fuel increased rates of antibiotic-resistant bloodstream infections. Up to 59% of Antarctic ice shelves at risk of disappearing by 2300. Skeptics guide to jogging big foots. SpaceTime Series 28 Episode 133 *More confirmation that the Universe's expansion is slowing A new study has confirmed earlier observations that the universe’s rate of expansion out from the big bang 13.8 billion years ago is slowing down. *First glimpse of the Sun’s polar magnetic field in motion Astronomers have had their first glimpse of the Sun’s south polar magnetic field in motion. *Space Weather events ramping up Astronomers are recording increased levels of Solar Storm activity right now with multiple X-class and strong M-class solar flares erupting from the Sun. *The Science Report The Hektoria Glacier on the Antarctic Peninsula retreated by at least eight kilometres in just two months. Kids who spend a lot of time on screens less likely to do well in primary or elementary school tests AI still unable to tell when someone is expressing a factually untrue belief. Alex on Tech NEO the humanoid housekeeper has arrived. SpaceTime Series 28 Episode 134 *Have astronomers finally seen the universe’s first stars Astronomers believe they may have finally detected some of the very first stars to shine in the universe. *Hidden secrets about the Moon and the asteroid Vesta Two separate NASA studies have revealed some fascinating hidden secrets about the Earth’s Moon and the Main Belt asteroid Vesta. *Euclid peers deep into a stellar nursery full of baby stars The European Space Agency's Euclid space telescope has peered through the dusty veil of the mysterious interstellar gas and dust nebula in the dark cloud LDN-1641 revealing a stellar nursery filled with a multitude of shimmering baby stars. *The Science Report The link between a person's IQ at age 18 and their risk of developing The bamboo-based plastic strong enough to be used for industrial purposes. Claims a natural sweetener derived from the Stevia plant, could help improve hair loss treatment. Skeptics guide to flat earthers falling flat on their face again. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Professor Chris Kirkland from Curtin University And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discounts and bonuses are incredibl Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
Transcribed
8 NOV 2025 · In this episode of SpaceTime, we explore remarkable discoveries and hypotheses that could redefine our understanding of planetary atmospheres and our journey back to the Moon.
Phosphine Discovery in Brian Dwarf Wolf 1130C
For the first time, astronomers have detected phosphine in the atmosphere of the brown dwarf Wolf 1130C, raising intriguing questions about its presence and the chemistry of such celestial bodies. This discovery, reported in the journal Science, highlights the significance of phosphorus as a potential biosignature for life and challenges previous theories regarding the abundance of phosphine in other brown dwarfs and gas giants. The episode delves into the implications of this finding and what it means for our understanding of phosphorus chemistry in the universe.
A New Hypothesis for Planetary Water Formation
A groundbreaking hypothesis suggests that some planets may produce water during their formation through reactions between rocks and hydrogen under extreme pressure. This new perspective, discussed in the journal Nature, could explain the presence of liquid water on exoplanets located close to their host stars, challenging traditional views of water's origins. The episode examines the laboratory experiments that led to this hypothesis and its potential impact on our understanding of planetary habitability.
Preparing for Humanity's Return to the Moon
As NASA gears up for the Artemis 2 mission, which aims to send humans around the Moon, we discuss the significance of returning to the lunar south pole. This area is believed to contain more water than any other region on the Moon, making it a crucial target for future exploration. The episode highlights the advancements in technology and international collaboration that will pave the way for a sustained human presence on the Moon, furthering our exploration of the solar system.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Science
https://www.sciencemag.org/
Nature
https://www.nature.com/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Phosphine Discovery in Brian Dwarf Wolf 1130C
A New Hypothesis for Planetary Water Formation
Preparing for Humanity's Return to the Moon
Transcribed
5 NOV 2025 · In this episode of SpaceTime, we dive into groundbreaking astronomical discoveries that challenge our understanding of the universe.
The Most Massive Stellar Black Hole Merger Ever Observed
Astronomers have detected the most massive stellar black hole merger to date, cataloged as GW23 1123, which resulted in a black hole with a staggering mass of 225 times that of our Sun. This episode discusses the implications of this merger, observed by the LIGO Virgo Collaboration, and how it pushes the boundaries of current theories on black hole formation. The rapid spinning of the resulting black hole raises intriguing questions about the processes that lead to such massive objects in the cosmos.
Unraveling the Mystery of Dark Matter
Can radio telescopes and NASA's IMAP mission provide answers to the enigma of dark matter? New research suggests that during the cosmic dark ages, dark matter clumped together, pulling in hydrogen gas that emitted powerful radio waves. This segment explores how these signals could potentially illuminate the properties of dark matter, which remains one of the biggest mysteries in astrophysics.
Navigating the Heliosphere with IMAP
NASA's Interstellar Mapping and Acceleration Probe (IMAP) is on a mission to study the heliosphere, the protective bubble created by the solar wind. As it travels towards its operational position, IMAP will provide unprecedented insights into the interactions between the solar wind and interstellar space, enhancing our understanding of space weather and its effects on our planet and future space exploration.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Nature Astronomy
https://www.nature.com/natureastronomy/
Proceedings of the National Academy of Sciences
https://www.pnas.org/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
The Most Massive Stellar Black Hole Merger Ever Observed
Unraveling the Mystery of Dark Matter
Navigating the Heliosphere with IMAP
Transcribed
4 NOV 2025 · In this episode of SpaceTime, we explore a trio of intriguing astronomical phenomena that are reshaping our understanding of the cosmos.
Interstellar Comet 3I Atlas: A Close Encounter
Interstellar comet 3I Atlas has reached its perihelion, passing closest to the Sun without any signs of alien life forms, despite wild media speculation. This episode discusses how the comet maintained its expected trajectory and velocity, while also revealing groundbreaking findings from NASA's Swift Space Telescope, which detected ultraviolet signatures of water from the comet, providing new insights into the chemistry of interstellar objects and their potential to harbour the building blocks of life.
A Colossal Gas Bridge Between Dwarf Galaxies
Astronomers have discovered a massive bridge of neutral hydrogen gas linking two dwarf galaxies, NGC 4532 and DDO 137, located approximately 53 million light years away. This remarkable structure spans an astonishing 185,000 light years and is accompanied by a vast tail of gas extending 1 million light years. The findings shed light on how galaxies interact and evolve, particularly in dense environments like the Virgo Cluster, and offer crucial insights into the dynamics of galactic gas and star formation.
Volcanic Eruptions and Hidden Ice on Mars
A new study suggests that explosive volcanic eruptions on ancient Mars may have transported water ice to the equatorial regions of the Red Planet. Using computer modelling, researchers propose that water vapour released during these eruptions could have frozen in the Martian atmosphere, leading to the accumulation of significant ice deposits. This discovery could have profound implications for future human exploration of Mars, as it raises questions about the availability of water resources in unexpected locations.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Nature Communications
https://www.nature.com/naturecommunications/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Interstellar Comet 3I Atlas: A Close Encounter
A Colossal Gas Bridge Between Dwarf Galaxies
Volcanic Eruptions and Hidden Ice on Mars
Supporters Club
4 NOV 2025 · SpaceTime S28E129 S28E130 S28E131 w/c November 3, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 129 *Interstellar Comet 3I Atlas passes behind the Sun, but no sign of alien life Interstellar Comet 3I Atlas has reached its perihelion marking its closest position to the Sun. *Dwarf galaxies linked by a massive intergalactic bridge Astronomers have discovered a colossal bridge of neutral hydrogen gas linking two dwarf galaxies *Volcanic eruptions may have delivered hidden ice to Mars's equator A new study suggests explosive volcanic eruptions on ancient Mars may have transported water ice to equatorial regions of the red planet. *The Science Report Moscow says it’s successfully tested a new nuclear powered cruise missile. Earth is now hotter than at any point in the past 125,000 years. Palaeontologists have identified a "nanotyrannus", or the dwarf tyrannosaurus, Skeptics guide to whether vegans have psychic abilities. SpaceTime Series 28 Episode 130 *The most massive stellar black hole merger ever seen Astronomers have seen the most massive stellar mass black hole merger ever detected by gravitational wave observatories. *Can the mystery of dark matter be unravelled using radio telescopes A new study from Tel Aviv University has predicted, for the first time, the groundbreaking results that can be obtained from detecting radio waves coming to us from the early Universe. *NASA’s IMAP Mission to Study Boundaries of Our Home in Space NASA mission managers say its new Interstellar Mapping and Acceleration Probe – IMAP – is continuing on course with all systems nominal. *The Science Report A possible association between autism and exposure to air pollution during pregnancy. A new study shows human activity has extended the fire season in nearly all regions on Earth. A new device using static electricity on your clothing could help you chat to AI systems. #Alex on Tech Does AI value human life. SpaceTime Series 28 Episode 131 *Detection of phosphine in a brown dwarf atmosphere raising questions Astronomers have for the first time found phosphine in the atmosphere of the brown dwarf Wolf 1130C. *A new hypothesis to explain how some planets get their water A new study claims that some planets may produce water during their formation through reactions between their rocks and hydrogen under pressure. *Preparing for our return to the Moon Half a century ago humans stepped on the Moon for the first time in a set of sorties that awed the world – now they’re finally preparing to go back. *The Science Report Teens who start using cannabis before age 15 are more likely to have mental and physical health issues. The world's major electric car makers will need to rely on lithium imports as soon as 2029. How to make chocolate taste even better. Skeptics guide to the of Princess Diana's ghost https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Professor Lister Staveley-Smith from the University of Western Australia node at the International Centre for Radio Astronomy Research. IMAP Project Scientist Matina Gkioulidou from the Johns Hopkins Applied Physics Laboratory IMAP Deputy Principal Investigator Eric Christian from NASA IMAP Principal Investigator Dave McComas from Princeton University And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
Transcribed
31 OCT 2025 · In this episode of SpaceTime, we delve into groundbreaking discoveries that could reshape our understanding of life on Mars and the cosmos beyond.
Martian Ice: A Potential Reservoir for Life
A recent study suggests that Martian ice may be the most promising location to search for signs of ancient microbial life. Researchers found that biomolecules from dormant microbes degrade significantly slower in pure water ice compared to Martian soil mixtures. This discovery, published in the journal Astrobiology, raises hopes that future missions to Mars could uncover preserved organic materials in its icy regions, potentially revealing the planet's biological history.
A Mysterious Dark Object in the Universe
Astronomers have identified the lowest mass dark object ever detected, with a mass about a million times that of our Sun. This enigmatic object, reported in Nature Astronomy, may offer insights into the nature of dark matter, which constitutes a significant portion of the universe's mass. The object was detected through gravitational lensing, and its small size challenges existing theories about dark matter's composition and distribution.
NASA's Call for Lunar Mission Bids
NASA is seeking new bids for its Artemis Moon program, aiming to foster competition among American companies to return humans to the lunar surface. With ongoing delays from SpaceX, NASA Administrator Sean Duffy emphasizes the urgency of the mission as the U.S. races against China to achieve lunar exploration milestones. The upcoming Artemis missions promise to be pivotal in establishing a sustainable human presence on the Moon.
November Skywatch with Jonathan Nally
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Astrobiology Journal
https://www.liebertpub.com/journals/astrobiology/1
Nature Astronomy
https://www.nature.com/natureastronomy/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Martian Ice: A Potential Reservoir for Life
A Mysterious Dark Object in the Universe
NASA's Call for Lunar Mission Bids
Transcribed
29 OCT 2025 · In this episode of SpaceTime, we explore remarkable discoveries that provide new insights into our solar system and beyond.
Relics of the Outer Solar System Found on the Moon
A groundbreaking study reveals that meteorites found on the Moon originated from the outer solar system. Researchers from the Chinese Academy of Sciences have identified olivine-bearing clasts from lunar regolith collected by the Chang'e 6 mission. These relics, believed to be carbonaceous chondrites, offer critical information about the formation and evolution of planets. The findings suggest that the Moon serves as a pristine archive for meteorites, with implications for understanding the origins of lunar water and organic materials.
Interstellar Comet 3I ATLAS: Insights into Alien Solar Systems
The interstellar comet 3I ATLAS is revealing fascinating details about the composition of other solar systems. New observations indicate that 3I ATLAS has been active longer than expected, releasing various molecules as it travels through our solar system. This segment discusses how the comet's behavior challenges existing assumptions about comet activity and provides clues about the materials present in distant star systems.
SpaceX's Starship Mega Rocket Test Flight
SpaceX has successfully completed its 11th test flight of the Starship Mega rocket, demonstrating significant advancements in its design and capabilities. The mission involved various maneuvers, including hot staging and payload deployment, as well as tests of the spacecraft's reentry and landing procedures. This episode highlights the importance of these tests for future missions to the Moon and Mars, as SpaceX continues to refine the Starship for interplanetary travel.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Proceedings of the National Academy of Sciences
https://www.pnas.org/
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Relics of the Outer Solar System Found on the Moon
Interstellar Comet 3I ATLAS: Insights into Alien Solar Systems
SpaceX's Starship Mega Rocket Test Flight
Supporters Club
10 NOV 2025 · SpaceTime S28E132 S28E133 S28E134 w/c November 10, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 132 A new study has uncovered a striking link between the structure of our Milky Way galaxy and the evolution of planet Earth's crust. *Taikonauts stranded in space following space junk impact Three Chinese taikonauts are stranded in orbit after suspected space junk hit their Shenzhou-20 spacecraft just hours before it was slated to undock from China’s Tiangong space station and return to Earth. *Biggest Supermoon of the year Sky watchers have enjoyed a spectacular perigee full moon. The biggest so called Supermoon of the year appeared to be 7 percent larger and 30 percent brighter than the average full moon. *The Science Report Warnings that Australian marsupials are being heavily contaminated with synthetic forever chemicals. Ageing populations set to fuel increased rates of antibiotic-resistant bloodstream infections. Up to 59% of Antarctic ice shelves at risk of disappearing by 2300. Skeptics guide to jogging big foots. SpaceTime Series 28 Episode 133 *More confirmation that the Universe's expansion is slowing A new study has confirmed earlier observations that the universe’s rate of expansion out from the big bang 13.8 billion years ago is slowing down. *First glimpse of the Sun’s polar magnetic field in motion Astronomers have had their first glimpse of the Sun’s south polar magnetic field in motion. *Space Weather events ramping up Astronomers are recording increased levels of Solar Storm activity right now with multiple X-class and strong M-class solar flares erupting from the Sun. *The Science Report The Hektoria Glacier on the Antarctic Peninsula retreated by at least eight kilometres in just two months. Kids who spend a lot of time on screens less likely to do well in primary or elementary school tests AI still unable to tell when someone is expressing a factually untrue belief. Alex on Tech NEO the humanoid housekeeper has arrived. SpaceTime Series 28 Episode 134 *Have astronomers finally seen the universe’s first stars Astronomers believe they may have finally detected some of the very first stars to shine in the universe. *Hidden secrets about the Moon and the asteroid Vesta Two separate NASA studies have revealed some fascinating hidden secrets about the Earth’s Moon and the Main Belt asteroid Vesta. *Euclid peers deep into a stellar nursery full of baby stars The European Space Agency's Euclid space telescope has peered through the dusty veil of the mysterious interstellar gas and dust nebula in the dark cloud LDN-1641 revealing a stellar nursery filled with a multitude of shimmering baby stars. *The Science Report The link between a person's IQ at age 18 and their risk of developing The bamboo-based plastic strong enough to be used for industrial purposes. Claims a natural sweetener derived from the Stevia plant, could help improve hair loss treatment. Skeptics guide to flat earthers falling flat on their face again. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Professor Chris Kirkland from Curtin University And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discounts and bonuses are incredibl Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
Supporters Club
4 NOV 2025 · SpaceTime S28E129 S28E130 S28E131 w/c November 3, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 129 *Interstellar Comet 3I Atlas passes behind the Sun, but no sign of alien life Interstellar Comet 3I Atlas has reached its perihelion marking its closest position to the Sun. *Dwarf galaxies linked by a massive intergalactic bridge Astronomers have discovered a colossal bridge of neutral hydrogen gas linking two dwarf galaxies *Volcanic eruptions may have delivered hidden ice to Mars's equator A new study suggests explosive volcanic eruptions on ancient Mars may have transported water ice to equatorial regions of the red planet. *The Science Report Moscow says it’s successfully tested a new nuclear powered cruise missile. Earth is now hotter than at any point in the past 125,000 years. Palaeontologists have identified a "nanotyrannus", or the dwarf tyrannosaurus, Skeptics guide to whether vegans have psychic abilities. SpaceTime Series 28 Episode 130 *The most massive stellar black hole merger ever seen Astronomers have seen the most massive stellar mass black hole merger ever detected by gravitational wave observatories. *Can the mystery of dark matter be unravelled using radio telescopes A new study from Tel Aviv University has predicted, for the first time, the groundbreaking results that can be obtained from detecting radio waves coming to us from the early Universe. *NASA’s IMAP Mission to Study Boundaries of Our Home in Space NASA mission managers say its new Interstellar Mapping and Acceleration Probe – IMAP – is continuing on course with all systems nominal. *The Science Report A possible association between autism and exposure to air pollution during pregnancy. A new study shows human activity has extended the fire season in nearly all regions on Earth. A new device using static electricity on your clothing could help you chat to AI systems. #Alex on Tech Does AI value human life. SpaceTime Series 28 Episode 131 *Detection of phosphine in a brown dwarf atmosphere raising questions Astronomers have for the first time found phosphine in the atmosphere of the brown dwarf Wolf 1130C. *A new hypothesis to explain how some planets get their water A new study claims that some planets may produce water during their formation through reactions between their rocks and hydrogen under pressure. *Preparing for our return to the Moon Half a century ago humans stepped on the Moon for the first time in a set of sorties that awed the world – now they’re finally preparing to go back. *The Science Report Teens who start using cannabis before age 15 are more likely to have mental and physical health issues. The world's major electric car makers will need to rely on lithium imports as soon as 2029. How to make chocolate taste even better. Skeptics guide to the of Princess Diana's ghost https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Professor Lister Staveley-Smith from the University of Western Australia node at the International Centre for Radio Astronomy Research. IMAP Project Scientist Matina Gkioulidou from the Johns Hopkins Applied Physics Laboratory IMAP Deputy Principal Investigator Eric Christian from NASA IMAP Principal Investigator Dave McComas from Princeton University And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
Supporters Club
27 OCT 2025 · SpaceTime S28E126 S28E127 S28E128 w/c October 27th, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 126 If you want to know what keeps astronomers up at nights – other than observing time – its scenarios like the one which happened earlier this month when an undetected asteroid was suddenly seen swooping past the Earth just 428 kilometres above the ground—that’s about the same altitude as the orbit of the International Space station. *Two green comets lighting up the night skies Sky watchers have been enjoying the rare sceptical of two bright green comets streaking across the night skies this month. *Chinese space junk smashes into Western Australia A still smouldering chunk of blackened space junk has been discovered lying in the middle of a remote access mining road in the Pilbara region of outback Western Australia. *The Science Report Global carbon dioxide levels hit a new record high of 423.9 parts per million. Archaeologists discover the remains of a fifteen hundred year old synagogue in the Golan Heights. Shocking revelations exposed in a new national survey marking Global Handwashing Day. Skeptics guide to the magic healing Biomet. SpaceTime Series 28 Episode 127 *Relics of the outer solar system discovered on the Moon A new study has confirmed that some meteorites found on the Moon originated in the dark outer reaches of the solar system. *What comet 3I/ATLAS tells us about other solar systems New images of interstellar comet are telling astronomers how this alien object is evolving as it travels through our solar system — and how other distant solar systems might be different from our own. *Another successful test flight for Starship SpaceX has completed a spectacularly successful eleventh test flight of its massive Starship mega rocket. *The Science Report New satellite images show that Iran is rebuilding its nuclear weapons infrastructure. The fossil remains of a 151-million-year-old insect unearthed in Australia. New spyware that identifies you using passive radio reflections. Alex on Tech Amazon’s global outage. SpaceTime Series 28 Episode 128 *Are there microbes in the Martian ice A new study has shown that Martian ice might be the best place to look for evidence of bio-molecules on the red planet. *Discovery of a mysterious dark object in distant universe Astronomers have detected the lowest-mass dark object yet found in the universe. *NASA looking for new bids for its lunar missions NASA has called for new bids for its Artemis Moon program to compete against SpaceX. *November Skywatch The giant spiral galaxy M31 Andromeda. the Crab Nebula M1 and three meteor showers are among the highlights of the November night skies on Skywatch. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Dr Robert Massey, the deputy executive director of the Royal Astronomical Society And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
Supporters Club
24 OCT 2025 · In this episode of SpaceTime, we unravel the mysteries of the universe's early years, exploring groundbreaking discoveries about the epoch of reionization, the formation of the first stars, and the role of hydrogen in cosmic history.
Revealing the Universe's Warm Beginnings
Recent findings published in the Astrophysical Journal highlight that the universe was warm and not cold during its formative years, challenging previous theories. Lead author Katherine Trott from Curtin University discusses how observations from the Murchison Wide Field Array radio telescope have provided insights into the epoch of reionization. This critical period marks the transition from the cosmic dark ages to a universe filled with light, driven by the radiation from the first stars and galaxies, which heated and ionized the gas in and between galaxies.
The Cosmic Dawn: Understanding Reionization
Trott explains how the new data reveals that gas began heating up around 800 million years after the Big Bang, contradicting the notion of a cold universe. The episode delves into the methods used to isolate the faint signals from this epoch, emphasizing the challenges faced by astronomers in filtering out noise from other cosmic sources. The implications of this research extend to our understanding of how the universe evolved and the processes that led to the formation of the first population of stars, which set the stage for the creation of heavier elements.
The Role of Hydrogen and Cosmic Chemistry
The discussion also touches on the significance of hydrogen as the most abundant element in the universe and its transformation during reionization. Trott highlights how the first stars, composed mainly of hydrogen and helium, contributed to the chemical enrichment of the universe, ultimately leading to the formation of the elements found on Earth today. The episode concludes with a look ahead at future research endeavors, including the anticipated Square Kilometre Array, which promises to deepen our understanding of the universe's early history.
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✍️ Episode References
Astrophysical Journal
https://iopscience.iop.org/journal/1538-4357
Murchison Wide Field Array
https://www.mwa-telescope.org/
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Revealing the Universe's Warm Beginnings
The Cosmic Dawn: Understanding Reionization
The Role of Hydrogen and Cosmic Chemistry
(00:00) Introduction to the epoch of reionization
(10:15) New findings on the universe's temperature during its early years
(20:00) The significance of hydrogen in cosmic evolution
(30:45) Future research with the Square Kilometre Array
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13 OCT 2025 · SpaceTime S28E123 S28E124 S28E125 w/c October 13th, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 123 *Invisible asteroids near Venus may threaten Earth There’s a new warning today about an unseen population of near Earth asteroids that could pose a threat to the planet. *New observations on how the universe turned out the way it is today Astronomers hunting for evidence of the light from the first stars and galaxies have found that the universe was warm, rather than cold, before it lit up. *Rogue planet found growing at a record rate Astronomers have identified an enormous ‘growth spurt’ in a rogue planet -- that is a planet not orbiting a host star. *The Science Report The Royal Swedish Academy of Sciences awards its 2025 Nobel Prizes in science in Stockholm. Skeptics guide to some of the strangest unsolved mysteries. SpaceTime Series 28 Episode 124 *High seas on the red planet Mars A new study has provided geological evidence that the Martian Northern Hemisphere was once home to a vast ocean. *Moon's biggest impact crater made a radioactive splash New analyses of the largest impact crater on the Moon may help scientists solve some of the longstanding mysteries of how Earth's only natural satellite came to be. *A new mission to study the Milky Way galaxy's interstellar medium NASA says it new Nancy Grace Roman Space Telescope will help astronomers better understand the Milky Way galaxy's interstellar medium – the dust and gas between stars. *The Science Report Unprecedented heatwaves in 2023 contributed to 178,486 excess deaths. New insights into the lives of 380-million-year-old lungfish. A laser based dating technique for measuring the age of dinosaur eggs. Alex on Tech: what are E sims. SpaceTime Series 28 Episode 125 *Raging winds on the red planet Mars A new study shows that wind speed on Mars can reach 160 kilometres per hour -- far higher than previously thought -- despite the red planet’s very thin atmosphere. *Unlocking the secrets of Earth’s deep past A new study has revealed some surprising clues about the beginning of subduction on planet Earth. *NASA on track to send astronauts around the Moon next year NASA says it’s on track to send humans on a journey to the Moon early next year. Mission managers say the Artemis II mission is expected to launch in April -- but could fly as early as February depending on preparations. *The Science Report Sleep apnoea suffers have worse symptoms if they live in areas with high levels of air pollution. A new study has found that Octopuses have a handedness. A new study has detected disease-causing microbes in commercial raw cat foods. Skeptics guide to the unicorn unearthed at King Arthur's Castle. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Professor Cathryn Trott from the Curtin University node of the International Center of Radio Astronomy Research And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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6 OCT 2025 · SpaceTime S28E120 S28E121 S28E122 w/c October 6th, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 120 A new study claims that the universe is approaching the midpoint of its 33-billion-year lifespan and will end in about 20 billion years’ time. * The European Space Agency’s Gaia space telescope has created the most accurate three-dimensional map of star-formation regions in our Milky Way galaxy. *How Fungi set the stage for life on land on planet Earth A new study examining life’s evolution on planet Earth has found that fungi set the stage for life on land between 900 million and 1.4 billion years ago -- hundreds of millions of years earlier than previously thought. *The Science Report Scientists have found a significant link between drinking soda beverages and depression. Scientists say people whose parents have mental illnesses are more likely to die prematurely Why one of the world’s oldest people lived so long. Skeptics guide to the 2025 bent spoon award. SpaceTime Series 28 Episode 121 *Complex chemistry in the oceans of Enceladus Scientists have discovered new complex organic molecules spewing from the Saturnian ice moon Enceladus. *Dream Chaser spaceplane set for first flight next year Sierra Space say their Dream Chaser spaceplane is now targeting late 2026 for its first free-flyer demonstration flight. *NASA’s new deep space laser communications project NASA says its new optical deep space laser communications project has exceeded all technical goals setting up the foundations for high-speed communications for future manned missions to Mars. *The Science Report People whose dads smoked during puberty seem to age faster than expected. Quantum computer chips have just cleared a major manufacturing hurdle. A quarter of all press releases are probably now written by Artificial Intelligence. Alex on Tech the dangers of AI Agents SpaceTime Series 28 Episode 122 *Potential smoking gun signature of supermassive dark stars Astronomers may have identified a type of star in the very early universe which fits the profile of the long hypothesized Dark Star. * Work is now underway on the Australian Space Agency’s first lunar rover mission which is slated to launch by the end of the decade. *Piecing together the early solar system A new study suggests that from its earliest period — even before the last of its proto-planetary nebular gas had been consumed — Earth’s solar system and its planets looked more like a bin of well-used LEGO blocks than slowly-evolving spheres of untouched elements and minerals. * The constellation Southern Cross, The Magellanic Clouds, and three meteor showers are among the highlights of the October night skies on Skywatch. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: NASA DSOC Ground Software Lead Sean Meenehan NASA DSOC Ground Laser Transmitter Lead Angel Velasco NASA DSOC Flight Laser Transceiver Lead Kenneth Andrews NASA DSOC Ground Detector Assembly Lead Emma Wollman NASA DSOC Operations Lead Meera Srinivasan And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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29 SEP 2025 · SpaceTime S28E117 S28E118 S28E119 w/c September 29th, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 117 *Stardust older than the solar system found in asteroid Bennu Scientists have identified minerals older than the solar system embedded in the asteroid Bennu. *Mysterious features discovered in Saturn's atmosphere New observations from the Webb Space Telescope have uncovered mysterious never before seen features in Saturn's atmosphere. *Parker Solar Probe undertakes a close flyby of the Sun NASA's Parker Solar Probe has just completed its 25th close approach to the Sun. The encounter matched the spacecraft’s previous record distance of 6.2 million kilometres from the solar surface. *The Science Report A new study has confirmed that people who remain virgins into adulthood are less happy. A widely reported study on apple cider vinegar and weight loss has been retracted. Scientists have confirmed a new dinosaur species that ate crocodiles. Skeptics guide to the ghosts of Skin Walker Ranch. SpaceTime Series 28 Episode 118 *The planet Mercury is still shrinking A new study has confirmed that the planet Mercury is still shrinking as it cools in the aftermath of its formation 4.6 billion years ago. *A new mission to study Earth's invisible halo NASA has launched a new mission to study Earth’s invisible halo. Understanding the physics of the exosphere is a key step toward forecasting dangerous conditions in near-Earth space. *The secrets of the red planet’s ancient volcanic systems A Martian meteorite found in northwestern Africa in 2023 is providing scientists with new details about the red planet’s ancient volcanic systems. *The Science Report Warnings that ship anchors and chains are damaging the Antarctic seafloor and killing unique marine life. A new study suggests ancient humans living in what is now Spain were cannibals. There may be some benefits for those who can’t stop binging on a good book or TV show series. Alex on Tech: Where we really at with Artificial Intelligence? SpaceTime series 28 Episode 119 *The Dwarf planet Ceres could once have supported life A new study claims the dwarf planet Ceres which today is a cold frozen world, could once have supported life. *NASA’s new mission to study the heliosphere NASA has launched a new mission to study the Sun's magnetic bubble the heliosphere. The heliosphere fills the entire solar system and helps shield us from interstellar particles and radiation. *Uni satellite snaps a selfie The University of Melbourne’s SpIRIT nanosatellite successfully completes the initial phase of its mission to search for gamma ray bursts. *The Science Report A new study has found that tropical fish are colonizing new habitats in temperate oceans. Confirmation that kids have a similar risk of dehydration and hyperthermia in extreme heat as adults. A new species of ancient currawong discovered in New Zealand’s Fossil record. Skeptics guide to the Kardashian’s paranormal encounters https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Associate Professor Nick Timms from Curtin University NASA Mission Scientist Alex Glocer Carruthers Geocorona Observatory Principal Investigator Lara Waldrop from the University of Illinois And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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Transcribed
26 SEP 2025 · Full Unedited Interview:
In this bonus episode of SpaceTime, we delve into a revolutionary mathematical model that could reshape our understanding of the universe's evolution over the past 13.8 billion years.
New Mathematical Model of the Universe
Researchers have introduced a new model based on data from the Dark Energy Spectroscopic Instrument (DESI), aiming to simplify the complexities of cosmic evolution. Lead author Leonardo Gianni from the University of Queensland explains how this model addresses the large-scale structure of the universe, likening it to a cosmic web of galaxies and voids. The study explores the role of dark energy, originally proposed by Einstein, and its implications for cosmic expansion. Gianni's work challenges conventional views, suggesting that the universe's expansion may be influenced more by the varied structures within it rather than a uniform dark energy.
Understanding Cosmic Structures
Gianni's model provides a framework to quantify the interactions of voids and collapsing regions, offering insight into phenomena like Hubble tension—the disparity in measurements of the universe's expansion rate. By analysing the minimum sizes of these cosmic structures, the research reveals how they can impact cosmological measurements without invoking new physics. The findings highlight the importance of accurately interpreting the universe's complexity and its implications for understanding dark matter and dark energy.
The Future of Cosmic Exploration
As we continue to explore the universe, questions about its ultimate fate remain. Will it expand forever, slow down, or collapse again? Gianni discusses the evidence suggesting a potential "big freeze" scenario, where the universe keeps expanding, albeit at a decreasing rate. This episode invites listeners to ponder the intricate relationship between our cosmic environment and the fundamental laws of physics, emphasising the ongoing journey of discovery in the field of cosmology.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Physical Review Letters
https://journals.aps.org/prl/
Dark Energy Spectroscopic Instrument
https://www.darkenergyspectroscopicinstrument.com/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
New Mathematical Model of the Universe
Understanding Cosmic Structures
The Future of Cosmic Exploration
Supporters Club
22 SEP 2025 · SpaceTime S28E114 S28E115 S28E116 w/c September 22nd, 2025 Space, Astronomy and Science Podcast. Monday Series 28 Episode 114 Scientists have developed a new mathematical model of the universe which attempts to explain its evolution over the past 13.8 billion years. *Are we alone in the universe A new study has once again raised *A partial Solar Eclipse darkens the skies Planet Earth is experiencing a partial solar eclipse today. The celestial spectacle is visible across New Zealand, the South Pacific, a sliver of the Australian Pacific coast and across much of the Antarctic. *The Science Report Warnings that boys exposed to passive smoke can go on to have kids with impaired lung function. The ozone hole in 2024 was smaller than in recent years. Israel's new directed energy weapon the Iron Beam is now fully operational. Skeptics guide to the science vs flat earth court case SpaceTime Series 28 Episode 115 *The exo-planet count passes six thousand Astronomers have just confirmed their six thousandth exoplanet – that is a planet orbiting a star other than the Sun. *Decoding Venus's mysterious surface Scientists trying to understand the weird surface features of the planet Venus may have finally come up with an explanation for at least some of strange world’s geography. *The growing tail of interstellar comet 3I/ATLAS Astronomers have obtained a striking new image of the growing tail of interstellar Comet 3I/ATLAS. *The Science Report Science confirms daylight savings is unhealthy. A new species of dinosaur identified in south Wales. Artificial intelligence can now determine which young adults need treatment to prevent vision loss. Alex on Tech Big Brother is coming to Australia. SpaceTime Series 28 Episode 116 *Mysterious red dots in early universe could be black hole atmospheres Astronomers believe that a series of mysterious red dots spotted in the very early universe could be the exotic stellar atmospheres around ancient black holes. *Discovery of multiple episodes of habitability on the red planet Mars has discovered strong evidence that the red planet’s Jezero Crater experienced multiple episodes of liquid water flooding, each with conditions that could have supported life as we know it. *ESA’s newest Australian deep space dish about to begin operations The European Space Agency is about to inaugurate its fourth Australian Deep Space Antenna at its New Norcia tracking station in Western Australia. *The Science Report A new study claims specific types of intestinal bacteria could be linked to insomnia. Scientists have finally confirmed that people really do see colours the same way. Scientists have identified a new species of stingray in a local Fiji fish market. Skeptics guide to the missing haunted doll. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Dr Leonardo Giani from the University of Queensland ESA head of Ground Station Systems Division Klaus Jurgen Schulz ESA Ground Stations Sub systems engineer Salvador Marti ESA Head of Systems and Project Support manager Marco Lanucara ESA Systems and Project Support manager Kevin Kewin ESA head of Ground Station Sub-Systems Igor Zayer And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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15 SEP 2025 · In this episode of SpaceTime, we dive into thrilling discoveries in planetary science and astronomy, including potential biosignatures on Mars, the detection of an atmosphere on the distant dwarf planet Makemake, and the awe-inspiring total lunar eclipse that captivated millions.
Potential Biosignatures on Mars
NASA's Perseverance rover has uncovered promising samples from an ancient riverbed in Jezero Crater, which may hold evidence of past microbial life on Mars. The study suggests that the unique mineral patterns found in the rock Chiava Falls could be indicative of biological activity, igniting excitement within the scientific community about the possibility of life beyond Earth. NASA's Acting Administrator has hailed this as the closest scientists have come to discovering life on the Red Planet.
Atmosphere Detected on Makemake
Astronomers have detected signs of a methane atmosphere on the dwarf planet Makemake, located in the Kuiper Belt. This groundbreaking discovery, made using NASA's Webb Space Telescope, suggests that Makemake may be more than just a frozen remnant of the solar system. The findings could imply ongoing geological activity or even cryovolcanism, challenging previous assumptions about the planet's characteristics.
Total Lunar Eclipse Spectacle
A stunning total lunar eclipse recently mesmerised observers across parts of Australia, Europe, Africa, and Asia. The event saw the Moon turn a striking blood red as it passed through Earth's shadow, offering a breathtaking display of celestial mechanics. This eclipse, the second of the year, serves as a reminder of the dynamic and beautiful processes occurring in our universe.
https://www.spacetimewithstuartgary.com/
✍️ Episode References
Nature
https://www.nature.com/
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Potential Biosignatures on Mars
Atmosphere Detected on Makemake
Total Lunar Eclipse Spectacle
Join host Stuart Gary for weekly explorations into Astronomy, Space, and Science News, featuring insights from 19 years on Australian Public Radio and industry experts.
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