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SpaceTime with Stuart Gary

Stuart Gary
  • 4.2 (295)
  • ASTRONOMY
  • UPDATED WEEKLY

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. Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.

  1. Cosmic Echoes and Jovian Secrets: Unraveling the Milky Way's Black Hole and Jupiter's Water Mysteries

    4D AGO

    Cosmic Echoes and Jovian Secrets: Unraveling the Milky Way's Black Hole and Jupiter's Water Mysteries

    Sponsor Link: This episode is brought to you with thanks to Squarespace. Bring your stories to life with Squarespace, the easiest way to create an exceptional website, blog, portfolio, or online store. To take up our great offer and help support the show, just visit www.squarespace.com/spacetime or use the Promo Code SPACETIME at checkout. SpaceTime with Stuart Gary Gary - Series 29 Episode 13 In this episode of SpaceTime, we uncover the hidden violent past of the Milky Way's supermassive black hole, delve into the origins of water on Jupiter's Galilean moons, and explore how meteor impacts are triggering dust avalanches on Mars. The Violent History of Sagittarius A For years, Sagittarius A, the supermassive black hole at the center of our galaxy, has been perceived as a quiet entity. However, new research published in the Astrophysical Journal Letters indicates that it may have experienced dramatic flares in the past. Observations from the CRISM Space Telescope reveal X-ray emissions from a gas cloud near Sagittarius A, suggesting a history of explosive activity that alters our understanding of supermassive black hole evolution and the history of our galaxy. Water Origins of Jupiter's Galilean Moons A groundbreaking study has determined that the contrasting water content of Jupiter's four large Galilean moons was established during their formation rather than evolving later. This research sheds light on the stark differences between Io, which is dry and volcanically active, and Europa, believed to have a subsurface ocean. The findings suggest that the primordial environment around Jupiter played a crucial role in shaping these moons' compositions. Meteor Impacts Trigger Dust Avalanches on Mars New evidence indicates that meteor impacts on Mars are causing dust avalanches, creating dark streaks on the planet's surface. An analysis of images from the European Space Agency's ExoMars Trace Gas Orbiter reveals that these avalanches occur primarily due to dry processes, driven by seasonal dust and wind activity, rather than water-related phenomena. This discovery enhances our understanding of Martian surface dynamics and the impact of meteor activity. www.spacetimewithstuartgary.com ✍️ Episode References Astrophysical Journal Letters Nature Communications Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support. (00:00:00) Sagittarius A's hidden violent past revealed (00:12:45) Origins of water on Jupiter's Galilean moons (00:25:30) Meteor impacts causing dust avalanches on Mars (00:35:00) February night sky highlights and celestial events. (00:00:00) This is space time series 29, episode 13 for broadcast on 30 January 2026 (00:00:47) X ray emissions from the Crism Space Telescope suggest Sagittarius A flared (00:07:59) A new study claims dust avalanches caused by meteor impacts are creating Martian streaks (00:10:22) February is the second month of the year in the Julian and Gregorian calendars (00:12:03) February's Orion meteor showers usually peak around February 8th (00:22:18) Blue supergiant Rigel is the second brightest star in the constellation Orion (00:31:08) Rygel: Sirius is the brightest star in the night sky (00:35:09) February is a great time to look for bright stars in the night sky (00:38:04) The night sky is sparse with the old planets at the moment

    43 min
  2. Earth's Hidden Mantle Secrets: Mars' Blue Past and the Cosmic Gas Pipeline of Galaxy Growth

    6D AGO

    Earth's Hidden Mantle Secrets: Mars' Blue Past and the Cosmic Gas Pipeline of Galaxy Growth

    Sponsor Link: This episode is brought to you with thanks to Squarespace. Bring your stories to life with Squarespace, the easiest way to create an exceptional website, blog, portfolio, or online store. To take up our great offer and help support the show, just visit www.squarespace.com/spacetime or use the Promo Code SPACETIME at checkout. SpaceTime with Stuart Gary Gary - Series 29 Episode 12 In this episode of SpaceTime, we uncover groundbreaking discoveries about Earth's mantle, the watery past of Mars, and the rapid growth of galaxies through cool gas filaments. Distinct Histories of Earth’s Mantle Provinces Recent research reveals that the two massive continent-sized regions deep within the Earth's mantle have unique chemical compositions and histories. This study challenges long-held assumptions and uses seismic wave data to illustrate how these large low velocity provinces differ in density and material, impacting the planet's heat extraction from the core and potentially affecting the stability of Earth's magnetic field. Confirmation of Mars as a Blue Planet New evidence from ancient Martian river deltas suggests that Mars was once covered by a vast ocean. High-resolution images reveal delta-like structures, indicating that water once flowed into an ocean approximately 3 billion years ago. This discovery supports the notion of a once habitable environment on Mars, offering insights into its geological history and the potential for life. Galaxies Growing Through Cool Gas Filaments A fascinating new study has demonstrated how galaxies can rapidly grow by drawing in filaments of cool gas. Observations from the Keck Telescope's Cosmic Webb Imager provide direct evidence of these gas streams spiraling into galaxies, fueling star formation at unprecedented rates. This research offers significant insights into the processes of galaxy formation and the role of the cosmic web in shaping the universe. www.spacetimewithstuartgary.com ✍️ Episode References Scientific Reports MPJ Space Exploration Nature Astronomy Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support. (00:00:00) Distinct histories of Earth's mantle provinces (00:12:15) Mars confirmed as a blue planet with ancient ocean (00:25:30) Galaxies grow rapidly through cool gas filaments (00:35:00) Discovery of the oldest known rock art in the world.

    25 min
  3. Solar Storms and Lunar Returns: The Artemis 2 Mission and Earth's Record-Breaking Solar Flare

    JAN 27

    Solar Storms and Lunar Returns: The Artemis 2 Mission and Earth's Record-Breaking Solar Flare

    Sponsor Link: This episode is brought to you with thanks to Squarespace. Bring your stories to life with Squarespace, the easiest way to create an exceptional website, blog, portfolio, or online store. To take up our great offer and help support the show, just visit www.squarespace.com/spacetime or use the Promo Code SPACETIME at checkout. SpaceTime with Stuart Gary Gary - Series 29 Episode 11 In this episode of SpaceTime, we dive into the latest astronomical events, including a record-setting solar storm impacting Earth, the historic Artemis 2 mission preparing to return astronauts to the Moon, and groundbreaking evidence confirming an ancient asteroid impact in the North Sea. Record-Breaking Solar Storm Strikes Earth Planet Earth has recently experienced a massive geomagnetic storm triggered by an X1.9 class solar flare, followed by a coronal mass ejection. This event produced stunning auroras, visible as far north as Sydney and Brisbane. We discuss how such solar storms can affect technology on Earth and in space, including potential disruptions to communications and navigation systems, as well as the impact on satellites in low Earth orbit. Artemis 2: A Historic Return to the Moon NASA's Artemis 2 mission is gearing up to send astronauts back to the Moon for the first time in over 50 years. The crew will embark on a 10-day journey, orbiting the Moon and traveling further than any humans have before. We explore the mission's objectives, including testing spacecraft systems, practicing docking procedures, and conducting deep space science experiments, all while preparing for future lunar landings. Proof of an Ancient Asteroid Impact A decades-long debate over the origins of the Silverpit Crater in the North Sea has been resolved with new evidence confirming it was formed by an asteroid impact 43 to 46 million years ago. Utilizing seismic imaging and microscopic analysis, researchers have established this crater as a significant impact site, shedding light on the history of asteroid collisions on Earth and their implications for our planet's geological evolution. www.spacetimewithstuartgary.com ✍️ Episode References Nature Communications NASA Reports Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support. (00:00:00) Record solar storm strikes Earth (00:12:30) Artemis 2 mission prepares to send astronauts back to the Moon (00:25:00) Evidence confirms asteroid impact in the North Sea (00:35:15) New insights into Earth's climate from ancient geological events.

    27 min
  4. Solar Storms and Lunar Returns: Artemis 2's Historic Mission and Earth's Cosmic Weather| S29E11, 12 & 13

    JAN 26 • SUBSCRIBERS ONLY

    Solar Storms and Lunar Returns: Artemis 2's Historic Mission and Earth's Cosmic Weather| S29E11, 12 & 13

    SpaceTime S29E11 S29E12 S29E13 w/c January 26th, 2026 Space, Astronomy and Science Podcast. SpaceTime Series 29 Episode 11 *Earth hit by record setting solar storm Planet Earth’s just been hit by another massive geomagnetic solar storm. The event was triggered by a powerful X-1.9 class solar flare and coronal mass ejection which pummelled the planet generating spectacular auroral activity. *Artemis II ready to send astronauts back to the Moon NASA’s giant Artemis II Moon rocket has been rolled out onto the launch pad for next months planned mission to send four astronauts back to the Moon for the first time in over half a century. *Proof that an asteroid hit the North Sea over 43 million years ago A decades-long scientific debate over the origins of the Silverpit Crater in the southern North Sea has finally been resolved with new evidence confirming that it was caused by an asteroid or comet impact between 43 and 46 million years ago. *The Science Report No evidence of a link between paracetamol and autism. World Meteorological Organization confirms that 2025 was one of the three warmest years on record. The collision between Central and South America occurred far earlier than previously thought. Skeptics guide to living with ghosts in your house. SpaceTime 20260128 Series 29 Episode 12 *Continents deep in the Earth’s mantle Scientists studying the evolution of two massive continent-size regions in Earth’s deep mantle have discovered that they each have their own distinctive histories and chemical composition. *Confirmation that Mars was once a blue planet A new orbital study examining ancient Martian river deltas suggest the red planet was once a blue planet with a vast ocean. *How galaxies can grow quickly A new study has discovered how galaxies can grow by sucking in filaments of cool gas to feed growing stars. *The Science Report Discovery of the oldest known rock art in the world dating back some 67 thousand years. How the ancient Tethys sea might have shaped Central Asia’s topography. A cow showing for the first time that cattle are capable of versatile tool use. Alex on Tech Siri getting a major make over. SpaceTime Series 29 Episode 13 *The Milky Way’s supermassive black hole hiding a violent past The Milky Way Galaxy’s supermassive black hole Sagittarius A* has long been considered a quiet sedate creature, but a new study has discovered a violent past. *The water makeup of Jupiter’s Galilean moons was set at birth A new study has shown that the differing water content of Jupiter’s four large Galilean moons was established as they formed and not from later evolutionary processes. *Meteoroid impact triggers dust avalanches on Mars A new study claims dust avalanches caused by meteor impacts can generate dark scratch like streaks on the red planet’s surface. *February Skywatch The constellation of Orion the Hunter, The red supergiant Betelgeuse, and the Pleiades or seven sisters open star cluster are among the highlights of the February night skies on SkyWatch. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Donal O’Sullivan from Caltech And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics And Senior science writer and Sky and Telescope magazine contributor Jonathan Nally 🌏 Get Our Exclusive NordVPN deal here ➼ www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌

    1h 26m
  5. Nuclear Rockets and Cosmic Mergers: Exploring the Future of Space Travel and Galactic Evolution

    JAN 23

    Nuclear Rockets and Cosmic Mergers: Exploring the Future of Space Travel and Galactic Evolution

    SpaceTime with Stuart Gary Gary - Series 29 Episode 10 In this episode of SpaceTime, we explore groundbreaking developments in space exploration, including the imminent launch of the first nuclear-powered rocket, the merging of low mass dwarf galaxies, and the intriguing connection between Earth-like planets and gas giants. The Dawn of Nuclear Rocket Technology History is set to be made as NASA and DARPA prepare to test the world’s first fully operational nuclear-powered orbital rocket. This innovative vehicle utilizes a nuclear thermal propulsion system that heats liquid hydrogen propellant through nuclear fusion, achieving nearly double the efficiency of conventional rockets. The test aims to validate reactor operation in orbit, potentially revolutionizing space travel by reducing transit times to Mars and allowing for larger payloads. Merging Dwarf Galaxies: A New Discovery A recent study published in the Astrophysical Journal Letters confirms that low mass dwarf galaxies can merge with one another. Observations of the Ursa Minor dwarf spheroidal galaxy reveal previously hidden stellar structures, suggesting that even the smallest galaxies experience mergers. These findings challenge traditional views on galaxy formation and evolution, indicating that interactions between dwarf galaxies may be more common than previously believed. The Connection Between Earth-Like and Gas Giant Planets Astronomers have found that rocky planets similar to Earth are more likely to exist in star systems that also contain large gas giants like Jupiter. This research, reported in Astronomy and Astrophysics, shows that cold Jupiters, which orbit beyond the snow line, play a significant role in the formation of super Earths in the inner regions of their planetary systems. The study offers new insights into the complex dynamics of planetary formation and the conditions that lead to the development of terrestrial planets. www.spacetimewithstuartgary.com ✍️ Episode References Astrophysical Journal Letters Astronomy and Astrophysics Science Advances Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support. (00:00:00) NASA and DARPA prepare to test the first nuclear-powered orbital rocket (00:10:15) New study confirms mergers among low mass dwarf galaxies (00:20:45) Link discovered between Earth-like planets and gas giants (00:30:00) China breaks through barriers in nuclear fusion reactor development (00:35:20) The impact of ultra-processed foods on global health.

    17 min
  6. Cosmic Mysteries: Unveiling the Secrets of Black Holes, Jupiter's Oxygen, and Earth's Gamma Ray Revolution

    JAN 21

    Cosmic Mysteries: Unveiling the Secrets of Black Holes, Jupiter's Oxygen, and Earth's Gamma Ray Revolution

    SpaceTime with Stuart Gary Gary - Series 29 Episode 9 In this episode of SpaceTime, we unravel the enigma of the universe's mysterious little red dots, delve into groundbreaking insights from Jupiter regarding the evolution of our solar system's planets, and mark the commencement of construction on Earth's largest gamma-ray observatory. The Mystery of the Little Red Dots A fascinating new study reveals that the enigmatic little red dots observed in early images from the NASA Webb Space Telescope are, in fact, young black holes cloaked in ionized gas. Researchers from the Niels Bohr Institute's Cosmic Dawn Center have determined that these black holes, much smaller than previously thought, are in the process of consuming gas, which creates immense heat and radiation, giving them their distinctive red appearance. This discovery sheds light on the formation of some of the universe's earliest black holes just 700 million years after the Big Bang. Jupiter's Role in Planetary Evolution New simulations indicate that Jupiter may contain up to 50% more oxygen than the Sun, providing fresh insights into how the planets in our solar system formed. By developing a comprehensive model of Jupiter's atmosphere, researchers have resolved a long-standing debate regarding the gas giant's chemical composition. The findings suggest that Jupiter's atmosphere circulates much more slowly than previously believed, which could alter our understanding of planetary migration and formation processes. Construction of Earth's Largest Gamma-Ray Observatory Engineers have officially begun construction on the Cherenkov Telescope Array Observatory, set to be the largest gamma-ray telescope ever built. Located in Chile's Atacama Desert, this observatory will significantly enhance our ability to study high-energy cosmic phenomena, such as black holes and supernovae. With over 60 telescopes across two sites, the observatory will allow astronomers to observe gamma rays with unprecedented accuracy, potentially unlocking new discoveries about dark matter and the fundamental laws of physics. www.spacetimewithstuartgary.com ✍️ Episode References Nature Journal Planetary Science Journal Advances in Atmospheric Sciences Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support. (00:00:00) New study reveals little red dots in Webb images are young black holes (00:07:30) Jupiter may have 50% more oxygen than the Sun, reshaping planetary formation theories (00:15:45) Construction begins on the Cherenkov Telescope Array Observatory (00:22:00) New data confirms 2025 saw record ocean heat storage (00:25:30) Advances in autonomous driving technology showcased at CES 2026.

    29 min
  7. Mars and Earth's Climate: Unveiling the Cosmic Connection and Crew 11's Historic Return

    JAN 20

    Mars and Earth's Climate: Unveiling the Cosmic Connection and Crew 11's Historic Return

    SpaceTime with Stuart Gary Gary - Series 29 Episode 8 In this episode of SpaceTime, we investigate the surprising ways Mars influences Earth's climate, hear about the safe return of Crew 11 following the first emergency medical evacuation from the International Space Station, and explore a cosmic clock that reveals insights into Australia's geological history. Mars: A Climate Influencer A new study has unveiled that the orbit of Mars can significantly impact Earth's climate, even triggering ice ages. Researchers from the University of California Riverside utilized computer simulations to demonstrate how Mars’ gravitational pull alters Earth's orbit and affects long-term climatic cycles. The findings challenge previous assumptions about Mars' minimal influence and highlight the planet's role in shaping Earth's climatic patterns over millions of years. Crew 11's Safe Return NASA's SpaceX Crew 11 has successfully splashed down in the North Pacific Ocean after a historic emergency medical evacuation from the ISS. The crew's return, which occurred a month earlier than planned due to medical concerns, was marked by a brilliant display in the night sky as they descended. This marks a significant event in the history of human spaceflight, emphasizing the importance of health monitoring aboard the space station. Unveiling Australia's Geological History Scientists have discovered that the rare gas krypton can be used to unlock the secrets of Earth's ancient landscapes. By examining tiny zircon crystals found in ancient beach sands, researchers can gauge how long these minerals have been exposed at the surface, providing insights into erosion rates and potential mineral deposits. This groundbreaking research not only sheds light on the past but also has implications for future resource exploration in Australia. www.spacetimewithstuartgary.com ✍️ Episode References Journal of the Proceedings of the National Academy of Sciences Astronomical Society of the Pacific NASA Reports Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support. (00:00:00) New study shows how the orbit of Mars can affect climate here on Earth (00:05:52) NASA's SpaceX crew 11 safely returned to Earth after medical evacuation (00:08:17) SpaceX and NASA astronauts splashdown after 167 days in space (00:09:00) The crew were returning a month early due to medical concerns (00:10:46) Scientists use rare gas called krypton to study ancient Earth landscapes (00:23:05) New data from NASA shows 2025 was the second hottest year since records began (00:24:38) Some AI chatbots are reporting abuse and fear following interactions with humans

    29 min
  8. Mars vs Earth, Crew 11 Safe, Cosmic Clock: S29E08, 09 & 10

    JAN 18 • SUBSCRIBERS ONLY

    Mars vs Earth, Crew 11 Safe, Cosmic Clock: S29E08, 09 & 10

    SpaceTime S29E08 S29E09 S29E10 w/c January 19th, 2026 Space, Astronomy and Science Podcast. SpaceTime Series 29 Episode 08 *How tiny Mars impacts Earth’s climate A new study has shown how the orbit of the red planet Mars effects climates on Earth, even triggering ice ages. *Crew 11 returns to Earth safely following a medical evacuation NASA’s SpaceX Crew 11 have returned safely to Earth splashing down in the North Pacific Ocean off the California coast following an emergency medical evacuation from the International Space Station. *Cosmic clock reveals Australian history Scientists have shown how a rare gas called Krypton can be used to uncover the ancient history of Earth’s landscapes as well as its potential future mineral wealth. *The Science Report New data from NASA has shown that 2025 was the second hottest year since records began in 1880. Study shows some AI chatbots have reported abuse and fear following their interactions with humans. Scientists create synthetic ‘skin’ that can change colour and texture on demand. Skeptics guide to the worst flu season on record. SpaceTime Series 29 Episode 09 *Solving the mystery of the universe's ‘little red dots’ A new study claims mysterious little red dots that turned up in some of the first images captured by NASA’s Webb Space Telescope are actually black holes concealed in cocoons of ionized gas. *What Jupiter is now telling us about the evolution of the solar system’s planets New computer simulations suggesting that Jupiter could hold fifty percent more oxygen than the Sun paints a new picture of how the planets in our solar system were formed. *Construction begins on Earth’s largest gamma-ray observatory Engineers have begun construction on the Cherenkov Telescope Array Observatory which will be the largest Gamma Ray telescope ever built. *The Science Report Study confirms 2025 saw Earth's oceans store more heat than at any other time since records began. Anthropologists identify traces of toxic poison compounds on 60,000-year-old arrowheads. Avoiding social media in elementary or primary school linked to improved mental health in kids. Alex on Tech CES from Lego to AI cars. SpaceTime Series 29 Episode 10 *The first nuclear rocket about to be launched into space History’s about to be made with NASA and the Defence Advanced Research Projects Agency -- DARPA – getting ready to test the world’s first fully operational nuclear powered orbital rocket in the coming months. *Do low-mass dwarf galaxies merge Astronomers have confirmed that low mass dwarf galaxies can and do merge with each other. *The link between Earth like planets and Jupiter like gas giants Astronomers have shown that rocky terrestrial planets -- similar to Earth -- tend to occur more often in star systems which also contain large Jupiter-like planets in more distant orbits. *The Science Report Study shows cheaper, ultra-processed foods are increasing the rate of chronic diseases. China breaks decades long barrier that’s limited nuclear fusion reactor development. Dogs can be especially good at learning words simply by eavesdropping on human conversation. Skeptics guide to fake AI doctors plaguing the internet. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Associate Professor Milo Barham from Curtin University Suzanna Randall from the European Southern Observatory Martin Schlecker from the Max Planck Institute for Astronomy in Heidelberg And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌

    36 min
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Hosts & Guests

4.2
out of 5
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About

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. Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.

Information

  • Creator
    Stuart Gary
  • Years Active
    2016 - 2026
  • Episodes
    1.2K
  • Rating
    Clean
  • Copyright
    © Copyright bitesz.com
  • Show Website
    SpaceTime with Stuart Gary
  • Provider
    Bitesz.com Pty Ltd

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