Episodios

  • Uranus Unveiled: Decoding the Mystery of Radiation Belts and Martian River Systems

    Uranus Unveiled: Decoding the Mystery of Radiation Belts and Martian River Systems
    Dec 13 2025
    In this episode of SpaceTime, we tackle some of the most intriguing cosmic mysteries and discoveries that could reshape our understanding of the universe.
    Unraveling Uranus: The Mystery of Its Radiation Belts
    For 39 years, the intense electron radiation belts surrounding Uranus have puzzled scientists since NASA's Voyager 2 flyby in 1986 revealed unexpectedly high levels of radiation. New analyses suggest these findings may be explained by a solar wind structure interacting with the Uranian system during Voyager 2's visit. This research opens up new questions about the fundamental physics governing these extreme energy levels and the unique characteristics of Uranus itself.
    Mapping Martian River Systems: A Historic First
    A groundbreaking study has mapped ancient river systems on Mars, identifying 16 large drainage basins that could have supported life billions of years ago. By synthesizing previous data on Martian river valleys, lakes, and canyons, scientists have outlined how these systems could have formed a global network, similar to Earth's most biodiverse river basins. This research enhances our understanding of Mars' geological history and its potential for past life.
    2026 Australasian Sky Guide Released
    The 2026 Australasian Sky Guide has officially been released, offering skywatchers a detailed monthly map of celestial events. Highlights include supermoons, planetary alignments, and eclipses, providing an exciting year ahead for astronomy enthusiasts. Dr. Nick Glom shares insights into the guide's features and the astronomical events to look forward to in the coming year.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Proceedings of the National Academy of Sciences
    Communications Earth and Environment
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
    (00:00:00) Scientists may have finally resolved 39 year old mystery about Uranus radiation belts
    (00:03:55) A new study has begun the task of mapping ancient river systems on Mars
    (00:08:06) The 2026 Australasian Sky Guide has just been released
    (00:10:23) The book tells readers what's up in the sky for each month
    (00:11:39) Total eclipse of the moon in March is spectacular and easy to photograph
    (00:14:22) A new study suggests volcanic activity may have paved the way for the Black Death
    (00:15:37) A new study claims people who want children are more likely to find older faces attractive
    (00:17:33) Tim Mendham warns about the dangers of taking medical advice on social media
    (00:20:08) Spacetime is available through bitesz.com and other podcasting platforms
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    21 m
  • Bennu's Bounty: Uncovering Sugars, Space Gum, and Stardust in Asteroid Samples

    Bennu's Bounty: Uncovering Sugars, Space Gum, and Stardust in Asteroid Samples
    Dec 10 2025
    SpaceTime with Stuart Gary - Series 28 Episode 145
    In this episode of SpaceTime, we explore groundbreaking discoveries that deepen our understanding of the origins of life and the dynamics of our galaxy.
    Sugars and Stardust: Insights from Asteroid Bennu
    NASA's Osiris Rex mission has returned samples from the asteroid Bennu, revealing the presence of biologically essential sugars, including ribose and glucose, along with a unique gum-like substance never before seen in astromaterials. These findings, published in Nature Geoscience and Nature Astronomy, suggest that the building blocks for life were widespread throughout the early solar system. The discovery of ribose supports the RNA world hypothesis, indicating that RNA might have been the first genetic material. Additionally, the presence of glucose hints at the early energy sources available for life on Earth.
    Stars Defying the Black Hole
    Astronomers have observed numerous stars in stable orbits around Sagittarius A, the supermassive black hole at the center of our galaxy. This discovery, reported in Astronomy and Astrophysics, challenges previous assumptions that these objects were merely clouds of dust on a collision course with destruction. Instead, the new data from the ERIS Enhanced Resolution Imager and Spectrograph reveals a dynamic and stable environment around the black hole, providing a unique laboratory for studying interactions between black holes and stars.
    Martian Mystery Solved?
    A new radar technique employed by NASA's Mars Reconnaissance Orbiter has cast doubt on the existence of a suspected underground lake beneath the Martian South Pole ice cap. Initial signals that suggested the presence of liquid water have been reinterpreted as possibly being layers of rock and dust. This innovative approach opens new avenues for investigating subsurface resources on Mars, which could have significant implications for future exploration.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Nature Geoscience
    Nature Astronomy
    Astronomy and Astrophysics
    Geophysical Research Letters
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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    33 m
  • Galactic Tug-of-War: The Small Magellanic Cloud's Struggle Against Gravitational Forces

    Galactic Tug-of-War: The Small Magellanic Cloud's Struggle Against Gravitational Forces
    Dec 8 2025
    (00:00:00) Galactic Tug-of-War: The Small Magellanic Cloud's Struggle Against Gravitational Forces
    (00:00:46) One of our nearest neighbouring galaxies being torn apart
    (00:08:00) A giant spider on the Jovian Ice Moon Europa
    (00:12:23) Mars could have been habitable for long periods
    (00:14:14) The Science Report
    (00:17:23) Skeptics guide to why some people are born suckers
    (00:20:24) Episode Wrap

    In this episode of SpaceTime, we delve into fascinating cosmic phenomena and groundbreaking discoveries that could reshape our understanding of the universe.
    The Small Magellanic Cloud: A Galaxy Under Duress
    Astronomers have uncovered that the Small Magellanic Cloud, a nearby dwarf galaxy, is being torn apart by gravitational forces from its neighbor, the Large Magellanic Cloud. This revelation, published in the Astrophysical Journal Letters, highlights the complex movements of Cepheid variable stars within the galaxy, indicating that it is being stretched in multiple directions. By utilizing data from the European Space Agency's Gaia satellite, researchers have gained unprecedented insights into the interactions between these two galaxies, prompting a reevaluation of their structural dynamics and gravitational relationships with the Milky Way.
    Europa's Spider: Signs of Subsurface Water?
    A striking spider-like feature on Jupiter's moon Europa has scientists buzzing with excitement. Researchers suggest this formation, found near the Menanan impact crater, may be evidence of subsurface water seeping through the moon's icy crust following an asteroid impact. The findings, reported in the Planetary Science Journal, could have significant implications for the moon's habitability and the presence of life. By drawing parallels with similar features on Mars, scientists are eager to explore Europa's subsurface properties further, especially with the upcoming Europa Clipper mission set to launch in April 2030.
    Mars: A Longer Habitable History?
    New research indicates that Mars may have been habitable for a much longer duration than previously believed. A study published in the Journal of Geophysical Research Planets reveals that ancient underground water may have flowed beneath the Martian sand dunes, creating conditions conducive to life long after its surface water disappeared. This discovery not only enhances our understanding of Mars' geological history but also highlights the potential of subsurface environments as targets for future exploration in the search for past life.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Astrophysical Journal Letters
    Planetary Science Journal
    Journal of Geophysical Research Planets
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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    22 m
  • Lightning Strikes Mars: The First Detection of Electrical Discharges and NASA's New Look at Comet 3I Atlas

    Lightning Strikes Mars: The First Detection of Electrical Discharges and NASA's New Look at Comet 3I Atlas
    Dec 5 2025
    In this episode of SpaceTime, we explore groundbreaking discoveries and intriguing phenomena from Mars to the depths of space.
    Lightning Strikes on Mars: A Historic Discovery
    NASA's Perseverance Rover has made a remarkable find by detecting lightning in the Martian atmosphere for the first time. Recorded within two dust devils in Jezero Crater, the rover's Supercam microphone captured electromagnetic and acoustic signals indicative of electrical discharges. This discovery not only confirms long-held theories about Martian electrical activity but also reveals significant implications for the planet's atmospheric chemistry and potential hazards for future missions.
    NASA's Observations of Interstellar Comet 3I Atlas
    Following the European Space Agency's observations, NASA has released stunning images of interstellar comet 3I Atlas. As the comet passed close to Mars, NASA's MAVEN and Mars Reconnaissance Orbiter provided crucial data on its trajectory and chemical composition. These insights are helping astronomers piece together the comet's journey and origins, revealing potential clues about water in other star systems.
    Moss in Space: Resilience Against the Void
    A new study has shown that moss can survive the harsh conditions of space for up to 15 years. Researchers sent moss spores to the International Space Station, where they thrived despite exposure to the vacuum and extreme temperatures. This remarkable resilience could have implications for understanding life's potential to endure in extreme environments beyond Earth.
    Skywatch: December Highlights
    As the December solstice approaches, we take a look at the night sky's highlights, including the Geminids meteor shower and the ticking time bomb of Eta Carina. We also discuss the significance of the December solstice and the celestial events that define this time of year.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Journal of Nature
    NASA Reports
    Journal of Eye Science
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
    (00:00:00) NASA's Mars Perseverance Rover has captured evidence of electrical discharges
    (00:03:47) NASA publishes its own observations of the Interstellar Comet 3I Atlas
    (00:07:26) Moss spores survive exposure to vacuum of space for up to 15 years
    (00:09:40) The December solstice marks the beginning of winter in both hemispheres
    (00:11:54) Axial precession causes a slow and continuous change in Earth's rotational axis
    (00:15:11) Astronomers describe stars in terms of spectral types based on temperature and characteristics
    (00:19:04) Two blue stars nearing end of their lives before exploding massive core collapse supernovae
    (00:24:23) Just above the horizon is the constellation of Orion the Hunter
    (00:34:04) Canopus talks about the effect of the Moon on stargazing
    (00:37:03) The Southern Cross starts near the celestial equator and wanders far south
    (00:39:06) There are two star clusters that we speak about quite often on the show
    (00:41:50) The only planet that's up in the early evening is Saturn
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    45 m
  • Theia Unveiled: Tracing the Origins of Earth's Moon and Lucy's Journey to Jupiter's Trojans

    Theia Unveiled: Tracing the Origins of Earth's Moon and Lucy's Journey to Jupiter's Trojans
    Dec 3 2025
    (00:00:00) Theia Unveiled: Tracing the Origins of Earth's Moon and Lucy's Journey to Jupiter's Trojans
    (00:00:50) New study claims Theia and Earth were once neighbours
    (00:06:16) Lucy’s mission to Jupiter’s trojan asteroids
    (00:15:26) Starliner’s next mission to be limited to cargo only
    (00:17:57) The Science Report
    (00:23:17) Alex on Tech: Dooms Day clock countdown to Digital ID

    In this episode of SpaceTime, we dive into the intriguing origins of our Moon and the latest developments in space exploration.
    Theia: The Lost Planet Behind the Moon's Birth
    A groundbreaking study reveals that Theia, the small planet believed to have collided with Earth to form the Moon, originated from the inner solar system. Researchers from the Max Planck Institute and the University of Chicago have analyzed isotopic compositions of Earth and Moon rocks, suggesting that Theia was likely composed of materials found closer to the Sun than Earth's orbit. This discovery sheds light on the nature of this celestial body and its dramatic impact on our planet's history.
    Lucy Mission Update: Journey to Jupiter's Trojans
    NASA's Lucy spacecraft, launched in October 2021, is on an ambitious 12-year mission to explore Jupiter's Trojan asteroids. These ancient remnants from the solar system's formation are crucial for understanding planetary development. Lucy will visit seven asteroids, including both leading and trailing Trojan swarms, providing unprecedented insights into the early solar system. Principal Investigator Hal Levison emphasizes that the mission will revolutionize our understanding of planetary formation and the origins of volatiles and organics on terrestrial planets.
    Starliner Mission Limited to Cargo
    In a significant setback, NASA has announced that Boeing's Starliner spacecraft will only carry cargo on its next mission to the International Space Station. This decision follows a series of technical issues that plagued Starliner's previous flights. With the total number of planned missions reduced from six to four, NASA aims to ensure safety and reliability before allowing crewed flights again.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Journal of Science
    NASA Reports
    Max Planck Institute Studies
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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    30 m
  • Dark Matter Detected: A Breakthrough in Cosmic Mystery and CHEOPS' Next Milestone

    Dark Matter Detected: A Breakthrough in Cosmic Mystery and CHEOPS' Next Milestone
    Dec 1 2025
    In this episode of SpaceTime, we explore groundbreaking advancements in our understanding of the universe and the challenges faced in space exploration.
    Detecting Dark Matter: A Major Breakthrough
    After nearly a century of speculation, scientists may have finally detected dark matter. A report in the Journal of Cosmology and Astroparticle Physics reveals that gamma rays emitted from dark matter particle collisions have been observed using NASA's Fermi Gamma Ray Space Telescope. This discovery aligns with predictions about dark matter's existence and could signify a new particle not included in the current standard model of particle physics. If confirmed, this finding would represent one of the most significant developments in astronomy and physics to date.
    CHEOPS Spacecraft Nears Milestone
    The European Space Agency's CHEOPS (Characterizing Exoplanet Satellite) is approaching another milestone as it enters its sixth year of a mission initially planned for three and a half years. Launched in December 2019, CHEOPS aims to determine the size and characteristics of known exoplanets. With its 30-centimeter optical telescope, the spacecraft has been crucial in observing transiting exoplanets and will now extend its search to include exomoons, enhancing our understanding of planetary systems beyond our own.
    Disaster at Baikonur Cosmodrome
    A major disaster struck at the Baikonur Cosmodrome during the launch of the Soyuz MS.28 spacecraft to the International Space Station. The mobile service platform collapsed due to the rocket's exhaust plume, resulting in significant damage to the launch pad. This incident leaves Russia without a functional facility for manned space missions for the first time in 60 years, delaying upcoming launches and posing challenges for future missions.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Journal of Cosmology and Astroparticle Physics
    European Space Agency Reports
    NASA News Releases
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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    27 m
  • Interstellar Insights: Tracking Comet 3I/Atlas and the Ganon Superstorm's Impact on Earth

    Interstellar Insights: Tracking Comet 3I/Atlas and the Ganon Superstorm's Impact on Earth
    Nov 28 2025
    In this episode of SpaceTime, we delve into the latest discoveries and challenges in space exploration and Earth science.
    Tracking Interstellar Comet 3I Atlas from Mars
    The European Space Agency has successfully monitored interstellar comet 3I Atlas from its ExoMars Trace Gas Orbiter, significantly improving the accuracy of its predicted trajectory by a factor of ten. The comet, which travels at speeds of up to 250,000 km/h, was observed from a unique vantage point, allowing astronomers to refine its path through our solar system. This remarkable achievement underscores the importance of multi-location observations in planetary defense efforts.
    Geomagnetic Superstorm Ganon's Impact on Earth's Plasma Sphere
    A recent study reveals how the geomagnetic superstorm Ganon dramatically compressed Earth's plasmasphere, reducing its size to just a fifth of its normal extent. This event, which occurred in May 2024, provides crucial insights into the effects of extreme space weather on our planet's protective layers. The findings will enhance solar storm forecasts and help safeguard satellites and communication systems during such events.
    Delays for the Dream Chaser Spaceplane
    Sierra Space's Dream Chaser spaceplane faces further delays, now expected to launch its first orbital flight in approximately a year. Originally designed for crew transport, the spacecraft is now slated for resupply missions to the International Space Station. Despite setbacks, recent tests have demonstrated its systems' readiness for future operations, although challenges remain as the ISS's operational life nears its end.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Earth Planets and Space Journal
    Journal of the American Chemical Society
    NASA Reports
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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    25 m
  • Cosmic Speedsters: Unravelling Our Solar System's Surprising Velocity and Enceladus' Organic Secrets

    Cosmic Speedsters: Unravelling Our Solar System's Surprising Velocity and Enceladus' Organic Secrets
    Nov 26 2025
    (00:00:00) Cosmic Speedsters: Unravelling Our Solar System's Surprising Velocity and Enceladus' Organic Secrets
    (00:00:46) Our solar system is moving faster than expected
    (00:04:38) Organic molecules discovered erupting from Saturn’s moon Enceladus
    (00:08:29) A new satellite launched to study Earth’s oceans
    (00:13:49) The Science Report
    (00:15:52) Alex on Tech

    In this episode of SpaceTime, we uncover groundbreaking insights into Earth's mysteries and the cosmos beyond.
    Mysterious Structures in Earth's Mantle
    A new study reveals that enigmatic structures within Earth's mantle may hold vital clues about why our planet evolved the conditions necessary for life. These massive formations, known as large low shear velocity provinces and ultra low velocity zones, reside at the boundary between the mantle and outer core, approximately 2,900 kilometres beneath the surface. The research suggests these anomalies could be remnants of Earth's formative processes, providing a deeper understanding of how elements from the core influenced the planet's cooling, volcanic activity, and atmospheric evolution, ultimately setting Earth apart from Venus and Mars.
    Unprecedented View of the Milky Way
    Astronomers have achieved a remarkable new perspective of our home galaxy, the Milky Way, with the largest low-frequency radio image ever assembled. This extensive survey, conducted using the Murchison Wide Field Array radio telescope in Western Australia, captures the intricate birth, evolution, and demise of stars across the southern hemisphere. The new image, which boasts double the resolution and tenfold sensitivity compared to previous observations, offers valuable insights into stellar interactions and the cosmic landscape, revealing patterns in star formation and supernova remnants.
    Successful Return of Stranded Taikonauts
    In a significant development, the three Chinese taikonauts stranded in orbit after their Shenzhou 20 spacecraft was struck by space debris have safely returned to Earth aboard the Shenzhou 21 capsule. The crew's return marks the end of a six-month mission at the Tiangong space station, with their extended stay setting a new record for the longest duration in space for Chinese astronauts. The episode highlights the challenges of space travel and the rapid response by Beijing to ensure crew safety.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Nature Geoscience
    Publications of the Astronomical Society of Australia
    New England Journal of Medicine
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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    19 m