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SpaceTime with Stuart Gary

SpaceTime with Stuart Gary

De: Stuart Gary
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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.

Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.Copyright bitesz.com Astronomía Astronomía y Ciencia Espacial Ciencia Historia Natural Naturaleza y Ecología
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
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