SpaceTime: Your Guide to Space & Astronomy Podcast Por Stuart Gary arte de portada

SpaceTime: Your Guide to Space & Astronomy

SpaceTime: Your Guide to Space & Astronomy

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-your-guide-to-space-astronomy--2458531/support.Copyright bitesz.com Astronomía Astronomía y Ciencia Espacial Ciencia Historia Natural Naturaleza y Ecología
Episodios
  • Martian Oceans and Lunar Mysteries: Uncovering the Secrets of Our Cosmic Neighbours

    Martian Oceans and Lunar Mysteries: Uncovering the Secrets of Our Cosmic Neighbours
    Oct 15 2025
    In this episode of SpaceTime, we explore groundbreaking discoveries that reshape our understanding of Mars, the Moon, and the Milky Way Galaxy.
    Ancient Oceans on Mars: Geological Evidence Revealed
    A new study published in the journal Geophysical Research Letters presents compelling geological evidence that Mars' Northern Hemisphere was once home to a vast ocean. Lead author Chris from the University of Arkansas discusses how comparisons between river rocks on Earth and Martian sediment reveal ancient river deltas and backwater zones, suggesting that liquid water flowed on the Red Planet, increasing the possibility of past life. This episode delves into the processes of sedimentation and erosion that shaped Mars' landscape, providing insights into its watery past.
    The Moon's South Pole-Aitken Basin: Unveiling Impact Mysteries
    A fresh analysis of the Moon's largest impact crater, the South Pole-Aitken Basin, sheds light on its formation and the Moon's geological history. Researchers have discovered that this massive crater's shape indicates an impact from the north, challenging previous assumptions. As the Artemis missions prepare to land near this basin, they will have the opportunity to study material excavated from the lunar interior, potentially unlocking secrets about the Moon's evolution and the asymmetries in its crust.
    Nancy Chris Roman Space Telescope: Mapping the Milky Way
    NASA's upcoming Nancy Chris Roman Space Telescope is set to revolutionise our understanding of the Milky Way's interstellar medium. This mission will map around 20 billion stars, using infrared light to penetrate the dust clouds obscuring our view. Chief investigator Catherine Zucker explains how this data will refine our models of star formation and the galaxy's structure, while also addressing the ongoing mysteries of galactic spiral patterns and their role in star birth.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Geophysical Research Letters
    https://agupubs.onlinelibrary.wiley.com/journal/19448007
    Nature
    https://www.nature.com/nature
    NASA Nancy Chris Roman Space Telescope
    https://roman.gsfc.nasa.gov/
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
    Ancient Oceans on Mars: Geological Evidence Revealed
    The Moon's South Pole-Aitken Basin: Unveiling Impact Mysteries
    Nancy Chris Roman Space Telescope: Mapping the Milky Way
    (00:00) Evidence of ancient oceans on Mars
    (10:15) New insights into the Moon's largest impact crater
    (19:30) The upcoming Nancy Chris Roman Space Telescope mission
    (27:00) Science Robert: Heatwaves and their impact on global mortality
    Más Menos
    24 m
  • Hidden Hazards: Unmasking Earth's Threat from Invisible Asteroids

    Hidden Hazards: Unmasking Earth's Threat from Invisible Asteroids
    Oct 14 2025
    In this episode of SpaceTime, we delve into the intriguing world of near-Earth asteroids, the evolution of our universe, and the remarkable discovery of a rogue planet experiencing unprecedented growth.
    Invisible Asteroids Near Venus: A Hidden Threat
    Recent computer simulations published in the journal Astronomy and Astrophysics have raised alarms about a population of near-Earth asteroids that remain undetectable due to their proximity to Venus. These Venusian co-orbital asteroids, which share an orbital resonance with Venus, could pose a collision risk to Earth within a few thousand years. The study's lead author, Valerio Carumba, explains the challenges of observing these asteroids, as they are obscured by the Sun's glare. With a size of around 300 metres, these asteroids could create impact craters several kilometres wide, highlighting the need for dedicated space missions to monitor this potential threat.
    The Universe's Evolution: New Insights from the Epoch of Reionization
    Astronomers have made significant strides in understanding the universe's early days, revealing that it was warmer than previously thought before the first stars ignited. Research based on observations from the Murchison Wide Field Array in Western Australia indicates that the gas between galaxies was heated around 800 million years after the Big Bang, contradicting earlier theories of a cold universe. This heating, likely driven by early X-ray sources, set the stage for the epoch of reionization, which transformed the cosmos from opaque to transparent, allowing light to travel freely.
    A Richie Planet's Remarkable Growth Spurt
    In a groundbreaking discovery, astronomers have identified a rogue planet, catalogued as char 11 oh 7 minus 7626, that is not bound to any star and is growing at an astonishing rate of 6 billion tonnes of gas and dust per second. Located approximately 600 light years away in the constellation Chameleon, this planet challenges conventional notions of planetary stability. Observations reveal that its accretion rate fluctuates dramatically, highlighting the dynamic processes at play in the formation of rogue planets and blurring the lines between planets and stars.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Astronomy and Astrophysics
    https://www.aanda.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.
    Invisible Asteroids Near Venus: A Hidden Threat
    The Universe's Evolution: New Insights from the Epoch of Reionization
    A Richie Planet's Remarkable Growth Spurt
    (00:00) The threat posed by invisible asteroids near Venus
    (10:30) New findings on the universe's warm early phase
    (19:00) Discovery of a rogue planet growing at record rates
    (27:15) Science Robert: 2025 Nobel Prize announcements
    Más Menos
    38 m
  • Dark Stars and Cosmic Origins: Unraveling the Early Universe

    Dark Stars and Cosmic Origins: Unraveling the Early Universe
    Oct 10 2025
    In this episode of SpaceTime, we uncover the latest revelations in astrophysics, including the intriguing prospect of supermassive dark stars, Australia's ambitious lunar rover mission, and fresh insights into the formation of our solar system.
    Supermassive Dark Stars: A New Cosmic Discovery
    Astronomers have identified potential candidates for a new type of star in the early universe, known as supermassive dark stars. Recent observations from the Webb Space Telescope suggest that these stars, primarily composed of hydrogen and helium, are supported against gravitational collapse by dark matter. This episode delves into how these dark stars could help explain the existence of supermassive black holes and the unexpectedly bright distant galaxies observed by Webb. With the possibility of a smoking gun signature in their spectra, the implications of this discovery could reshape our understanding of dark matter and stellar evolution.
    Australia's Lunar Rover Mission: A Step Towards the Moon
    Work is underway on Australia's first lunar rover, set to launch as part of NASA's Artemis programme. This 20-kilogram robotic vehicle, developed by the Queensland University of Technology, will explore lunar geology and contribute to establishing a sustainable human presence on the Moon. The episode covers the rover's design, mission objectives, and the collaborative efforts between Australian institutions and NASA to advance lunar exploration.
    Piecing Together the Early Solar System
    New research published in Science Advances reveals that the early solar system was more chaotic than previously thought, with planets forming from recycled fragments of shattered bodies rather than pristine materials. This episode discusses the violent origins of our solar system and how high-energy collisions influenced the development of planetary cores, ultimately shaping the celestial bodies we know today.
    www.spacetimewithstuartgary.com
    ✍️ Episode References
    Journal of Physical Review Letters
    https://journals.aps.org/prl/
    Science Advances
    https://www.science.org/journal/sciadv
    Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
    Supermassive Dark Stars: A New Cosmic Discovery
    Australia's Lunar Rover Mission: A Step Towards the Moon
    Piecing Together the Early Solar System
    (00:00) The potential discovery of supermassive dark stars
    (10:15) Australia's new lunar rover mission details
    (18:45) New findings on the chaotic origins of the solar system
    (25:30) Skywatch for October: Meteor showers and celestial highlights
    Más Menos
    30 m
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