Episodes

  • Martian Gullies and Inside-Out Planets: Discoveries from the Cosmos

    Martian Gullies and Inside-Out Planets: Discoveries from the Cosmos
    Feb 27 2026
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    SpaceTime with Stuart Gary Gary - Series 29 Episode 25
    In this episode of SpaceTime, we explore the intriguing mysteries of Mars' gullies, uncover a unique inside-out planetary system, and witness the inaugural launch of Europe's most powerful rocket.
    Mysterious Martian Gullies Explained
    Scientists have made significant strides in understanding the enigmatic gullies on Mars, previously thought to be shaped by unknown forces. A new study published in Geophysical Research Letters reveals that blocks of frozen carbon dioxide are the culprits behind these formations. When the Martian winter sets in, CO2 ice accumulates and, upon warming, sublimates, creating gas pressure that carves deep gullies in the Martian surface. This groundbreaking phenomenon, likened to the sandworms of Dune, showcases a unique geological process not observed on Earth.
    Inside-Out Planetary System Discovery
    Astronomers have identified a remarkable new planetary system, catalogued as LHS 1903, that defies conventional models of planetary formation. Unlike our solar system, which features rocky planets close to the star and gas giants further out, LHS 1903 has a small rocky planet orbiting outside of two gas giants. This discovery, detailed in Science, suggests that this rocky world may have formed in a gas-depleted environment, challenging existing theories about how planets evolve and raising questions about the nature of planetary systems.
    Europe's Powerful Rocket Launch
    The European Space Agency has successfully launched the Ariane 64, its most powerful rocket to date, from the Kourou Spaceport in French Guiana. This inaugural mission, VA267, carried 32 satellites into orbit for Amazon's LEO network, marking a significant milestone as the largest number of satellites ever launched by an Ariane rocket. With plans for an average of 10 launches per year, the Ariane 64 is set to play a crucial role in the future of satellite deployment.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Geophysical Research Letters, Science
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    38 mins
  • The Birth of a Black Hole and Mars' New Navigation

    The Birth of a Black Hole and Mars' New Navigation
    Feb 26 2026
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    SpaceTime with Stuart Gary Gary - Series 29 Episode 24
    In this episode of SpaceTime, we uncover astonishing discoveries about the birth of black holes, a revolutionary Martian navigation system, and the arrival of NASA's SpaceX Crew 12 at the International Space Station.
    The Birth of a Black Hole: A New Perspective
    Astronomers have made a groundbreaking discovery by observing a star in the Andromeda Galaxy collapsing into a black hole without the expected supernova explosion. The star, catalogued as M31 2014 DS1, was seen glowing brightly in infrared light before fading away, leaving behind a dust shell. This event, which had been anticipated for decades, suggests that massive stars may collapse directly into black holes, challenging long-held assumptions about stellar deaths. The findings, published in the journal Science, provide new insights into the processes that govern black hole formation and indicate that such direct collapses may be more common than previously thought.
    NASA's New Martian Navigation System
    NASA has introduced an innovative navigation system for its Perseverance rover, allowing it to determine its location on Mars with remarkable precision—within 25 centimeters. The new technology, called Mars Global Localization, enables the rover to autonomously compare panoramic images with orbital terrain maps, eliminating the need for Earth-based assistance. This advancement significantly enhances the rover's ability to explore the Martian surface independently, paving the way for more extensive scientific investigations.
    SpaceX Crew 12 Arrives at the ISS
    NASA's SpaceX Crew 12 has successfully docked with the International Space Station, restoring the crew complement to seven members. The mission includes a diverse crew of two Americans, a Russian, and a French astronaut, who will conduct approximately 250 scientific experiments in orbit. Additionally, NASA has approved a sixth private mission to the ISS, slated for next year, which aims to support new research initiatives and infrastructure development for future human spaceflight missions.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Journal Science, NASA Reports
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    23 mins
  • Dark Matter Galaxies and Artemis Delays: Unraveling the Secrets of the Cosmos

    Dark Matter Galaxies and Artemis Delays: Unraveling the Secrets of the Cosmos
    Feb 24 2026
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    SpaceTime with Stuart Gary Gary - Series 29 Episode 23
    In this episode of SpaceTime, we investigate the discovery of a nearly invisible galaxy dominated by dark matter, the latest delays in the Artemis 2 mission to the Moon, and the anticipated launch of Australia's new hypersonic scramjet.
    A Dark Matter Galaxy Unveiled
    Astronomers have identified an almost invisible galaxy, catalogued as CDG2, located in the Perseus galaxy cluster approximately 300 million light years away. This galaxy is believed to be composed of about 99% dark matter, making it one of the most dark matter-dominated galaxies ever detected. The findings, published in Astrophysical Research Letters, reveal that dark matter constitutes roughly 80% of the universe's total matter, and CDG2's faint presence was confirmed through observations of its globular clusters using NASA's Hubble Space Telescope and the European Space Agency's Euclid Space Observatory.
    Artemis 2 Mission Delayed Again
    NASA has announced another delay for the Artemis 2 mission, which aims to return humans to lunar orbit for the first time in over 50 years. A helium leak discovered in the Space Launch System (SLS) rocket's upper stage has prompted the agency to roll back the launch vehicle to the vehicle assembly building for repairs. This setback eliminates the potential for a March launch, with the next available windows opening in early April. The Artemis 2 mission will carry a crew of four on a 10-day journey to the Moon, including critical system tests and satellite deployments.
    Australia's Hypersonic Scramjet Launch Imminent
    An Australian company is set to test its new hypersonic scramjet-powered aircraft, the Dart AE, before the end of the month. This innovative vehicle will utilize a 3D printed Spartan Scramjet engine, designed to operate at speeds exceeding Mach 5 with liquid hydrogen fuel. The mission, codenamed Cassowary Vex, will launch aboard a Rocket Lab electron rocket and aims to validate the scramjet propulsion system under real hypersonic flight conditions while producing zero carbon emissions.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Astrophysical Research Letters
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    27 mins
  • Primordial Black Holes and Saturn's Ring Origins: Unveiling Cosmic Mysteries

    Primordial Black Holes and Saturn's Ring Origins: Unveiling Cosmic Mysteries
    Feb 20 2026
    SpaceTime with Stuart Gary Gary - Series 29 Episode 22
    In this episode of SpaceTime, we delve into the formation of the universe's most enigmatic objects, explore the origins of Saturn's iconic rings, and get updates on NASA's Artemis 2 mission.
    Black Holes and Exotic Cosmic Structures
    A groundbreaking study suggests that some of the universe's most exotic entities, including black holes and cannibal stars, may have formed just seconds after the Big Bang. Researchers from the International School of Advanced Studies propose that subatomic particles condensed into halos of matter, which then collapsed to create these fascinating cosmic structures. Their findings, published in Physical Review D, indicate that even in the earliest moments of the universe, complex physical phenomena were already taking shape, paving the way for our understanding of cosmic evolution.
    The Formation of Saturn's Rings
    New research proposes that Saturn's largest moon, Titan, may have formed from the collision of two older moons, potentially linking this event to the creation of Saturn's spectacular ring system. The study, reported in the Planetary Science Journal, utilizes computer simulations to explore the dynamics of Saturn's moons and their interactions, suggesting that Titan's merger could explain its unique orbit and the age of the rings, estimated to be around 100 million years.
    NASA's Artemis 2 Mission Update
    Following the recent scrubbing of the Artemis 2 launch due to hydrogen leaks, NASA has made significant repairs and is preparing for another attempt. Engineers have replaced seals in the mobile launcher's umbilical area and are conducting further testing to ensure the rocket's readiness. With multiple launch windows available in March, the Artemis 2 mission aims to test key systems aboard the Orion spacecraft, setting the stage for future lunar exploration and the eventual return of humans to the Moon.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Physical Review D, Planetary Science Journal
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.
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    23 mins
  • Exploring Life's Potential on the Red Planet and Saturn's Tiny Moon

    Exploring Life's Potential on the Red Planet and Saturn's Tiny Moon
    Feb 18 2026
    SpaceTime with Stuart Gary Gary - Series 29 Episode 21
    In this episode of SpaceTime, we explore intriguing revelations about the search for life on Mars, the surprising effects of Saturn's moon Enceladus on its planet, and the monumental volcanic events that reshaped Earth's tectonic landscape.
    Life on Mars: A New Perspective
    Recent findings suggest that non-biological processes cannot fully explain the organic compounds found in Martian regolith samples collected by NASA's Curiosity rover. Published in the journal Astrobiology, the study indicates that life may have contributed to some of these compounds, challenging previous assumptions. The research involved evaluating potential non-biological sources and concluded that the abundance of organics on Mars could hint at past life, sparking renewed interest in the Red Planet's potential habitability.
    Enceladus' Electromagnetic Influence
    A fascinating study reveals that Saturn's icy moon Enceladus trails a wake of electromagnetic ripples extending over half a million kilometers, significantly influencing its giant host planet. Data from NASA's Cassini mission demonstrated how Enceladus' geysers contribute to energy and momentum circulation within Saturn's magnetic environment, marking a crucial discovery about the moon's role in the Saturnian system.
    Earth's Volcanic History
    New research highlights how Earth's largest volcanic event, associated with the Ontong Java Plateau, dramatically altered a major tectonic plate. The findings suggest that extensive volcanic activity led to significant physiochemical modifications within the oceanic plate, enhancing our understanding of plate formation processes and the environmental impacts of such massive eruptions.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Astrobiology, Geophysical Research Space Physics, Geophysical Research Letters
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    25 mins
  • Earth's Core Secrets and Solar Neutrinos: Unveiling the Mysteries of Our Planet and the Sun

    Earth's Core Secrets and Solar Neutrinos: Unveiling the Mysteries of Our Planet and the Sun
    Feb 17 2026
    In this episode of SpaceTime, we dive into groundbreaking research revealing the true composition of the Earth's core, explore new insights into solar neutrinos, and uncover the complexities of Martian volcanoes.
    Earth's Core Contains Vast Hydrogen Reservoir
    A recent study published in Nature Communications indicates that Earth's core may hold up to 45 oceans' worth of hydrogen, challenging the long-held belief that water on our planet primarily came from asteroids and comets. Utilizing advanced laboratory techniques, researchers simulated the extreme conditions of the core to uncover its surprising hydrogen content, suggesting a significant internal source of water far beyond previous estimates.
    Neutrinos from the Sun's Core
    A new dark matter experiment has successfully detected neutrinos originating from the Sun's core, marking a significant milestone in our understanding of these elusive particles. The LZ experiment at the Sanford Underground Research Facility captured signals from Brian 8 solar neutrinos, providing valuable data on solar processes and setting new limits for dark matter research. This breakthrough highlights the potential of neutrino studies in unraveling the mysteries of both dark matter and stellar dynamics.
    Complexity of Martian Volcanoes
    New findings published in Geology reveal that young Martian volcanoes are far more complex than previously thought. Researchers have discovered that these volcanoes were shaped by long-lasting and evolving magma systems rather than single eruptions. By analyzing surface features and mineral compositions from orbit, scientists have reconstructed the intricate eruptive history of these volcanic systems, shedding light on the Red Planet's geological past.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Nature Communications, Geology
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.
    (00:00:00) New study reveals Earth's core may contain vast amounts of hydrogen
    (00:08:30) Breakthrough in solar neutrino detection from the Sun's core
    (00:16:45) Insights into the complex eruptive history of Martian volcanoes
    (00:25:00) Science report: The link between caffeine consumption and reduced dementia risk
    (00:32:15) Study on the frequency of passionate love experiences in humans
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    32 mins
  • Black Hole Explosions and Martian Water Loss: Unraveling Cosmic Mysteries and Planetary Secrets

    Black Hole Explosions and Martian Water Loss: Unraveling Cosmic Mysteries and Planetary Secrets
    Feb 13 2026
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    SpaceTime with Stuart Gary Gary - Series 29 Episode 19
    In this episode of SpaceTime, we explore astonishing discoveries in astrophysics, planetary science, and aerospace engineering.
    Astronomers Observe Possible Black Hole Explosion
    Astronomers are investigating what could be the first ever observation of a black hole explosion. A recent study published in Physical Review Letters suggests that the mysterious high-energy neutrino detected in 2023 may have originated from a quasi-extremal primordial black hole. This type of black hole, theorized to exist since the Big Bang, could explain the otherwise unexplainable energy levels of the neutrino and potentially unlock the secrets of dark matter and the fundamental nature of the universe.
    Mars' Dust Storms and Water Loss
    New research published in Communications Earth and Environment reveals that localized dust storms on Mars may play a significant role in the planet's water loss. While Mars is currently a dry desert, evidence from its surface indicates a wetter past. The study shows that intense dust storms can transport water vapor to higher altitudes, facilitating its escape into space, thus contributing to the long-standing mystery of Martian water depletion.
    Plasma Daniel for Hypersonic Testing
    A groundbreaking facility known as the plasma tunnel is now being used by scientists and engineers to simulate the extreme conditions spacecraft face during atmospheric reentry. The plasma tunnel generates high-speed plasma flows that mimic the intense heat and pressure experienced during reentry, providing critical data for developing safer and more efficient spacecraft. This innovative technology could revolutionize our understanding of hypersonic flight and enhance mission safety for future space exploration.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Physical Review Letters, Communications Earth and Environment
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.
    (00:00:00) Astronomers investigate a potential black hole explosion
    (00:07:15) New study reveals how dust storms on Mars contribute to water loss
    (00:15:30) The plasma tunnel: recreating atmospheric reentry conditions
    (00:22:45) Science report: Genetic factors influencing life expectancy
    (00:30:00) Bigfoot sightings and cultural phenomena in America
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    24 mins
  • Dark Matter's Role and Lunar Mysteries: Unraveling the Secrets of Our Galaxy and Moon's Interior

    Dark Matter's Role and Lunar Mysteries: Unraveling the Secrets of Our Galaxy and Moon's Interior
    Feb 11 2026
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    SpaceTime with Stuart Gary Gary - Series 29 Episode 18
    In this episode of SpaceTime, we explore groundbreaking theories about the nature of dark matter, the thermal differences between the lunar far and near sides, and new revelations regarding Jupiter's dimensions.
    Dark Matter's Role in the Milky Way
    A new study suggests that dark matter could be the driving force behind the gravitational dynamics of our Milky Way galaxy. Researchers propose that a clump of fermionic dark matter might exert similar gravitational influence as the supermassive black hole at the galaxy's center, Sagittarius A. This theory challenges conventional understanding and is supported by data from the European Space Agency's Gaia mission, which mapped the galaxy's outer halo and rotational curve, indicating a potential new model for understanding galactic structures.
    Lunar Far Side's Cooler Interior
    Recent findings published in Nature Geoscience indicate that the lunar far side may be significantly cooler than the near side. Analyzing samples collected by China's Chang'e 6 mission, scientists discovered that the far side's regolith formed from lava at temperatures approximately 100 degrees Celsius lower than those from the near side. This study provides insight into the Moon's geological history and the uneven distribution of heat-producing elements, which may have resulted from ancient impacts or tidal forces from Earth.
    Jupiter's Slimmer Profile
    New measurements from NASA's Juno mission reveal that Jupiter is actually slimmer than previously thought, being about 8 kilometers narrower at the equator and 24 kilometers flatter at the poles. These findings refine our understanding of the gas giant's shape and have implications for models of planetary formation and evolution. The data also sheds light on Jupiter's atmospheric dynamics, including its powerful winds and cyclones, enhancing our knowledge of gas giants both within our solar system and beyond.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Monthly Notices of the Royal Astronomical Society, Nature Geoscience, Nature Astronomy
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.
    (00:00:00) New study claims that mysterious substance called dark matter could be powering our Milky Way
    (00:08:01) New study suggests lunar far side may be a little bit colder than near side
    (00:12:52) Space Time is brought to you by Squarespace. com spacetime
    (00:14:23) New measurements based on NASA's Juno mission reveal Jupiter is much smaller than previously thought
    (00:18:16) People with depressive personalities far more likely to have sexual fantasies, study finds
    (00:20:34) New test shows artificial intelligence chatbot admitting it would kill to save itself
    (00:27:09) Already we have security companies treating AI chatbots like humans
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    30 mins