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SpaceTime: Your Guide to Space & Astronomy

Stuart Gary
SpaceTime: Your Guide to Space & Astronomy
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  • Ceres: The Dwarf Planet That Might Have Hosted Life?
    In this episode of SpaceTime, we delve into the intriguing potential for life on the dwarf planet Ceres, explore NASA's latest mission to study the heliosphere, and celebrate the achievements of the University of Melbourne's Spirit Nanosat.Ceres: A Potentially Habitable World?Recent research published in Science Advances suggests that Ceres, currently a frigid and frozen world, may have once harboured conditions suitable for life. By modelling the planet's thermal and chemical history, scientists propose that Ceres could have sustained a long-lasting energy source, allowing for microbial metabolism. While there's no direct evidence of life, the findings indicate that Ceres had the necessary ingredients—water, carbon, and chemical energy—that could have supported single-celled organisms in its ancient past.Nasa's New Heliospheric MissionNASA has launched the Interstellar Mapping and Acceleration Probe (IMAP) to investigate the heliosphere, the magnetic bubble surrounding our solar system. This mission aims to enhance our understanding of solar wind and its interactions with interstellar particles, which are crucial for assessing space weather impacts on Earth. IMAP will operate alongside the Carruthers Geocorona Observatory and NOAA's Swifo L1 spacecraft, contributing to a comprehensive study of our solar environment.Spirit Nanosat's Milestone AchievementThe University of Melbourne's Spirit nanosatellite has successfully completed its initial mission phase, deploying its thermal management system and taking a selfie in space. Launched in December 2023, Spirit is equipped with a miniaturised gamma-ray detector to search for gamma-ray bursts, marking a significant advancement in small satellite technology and scientific exploration.www.spacetimewithstuartgary.com✍️ Episode ReferencesScience Advanceshttps://www.science.org/journal/sciadvNASA IMAP Missionhttps://www.nasa.gov/imapUniversity of Melbourne Spirit Nanosatellitehttps://www.unimelb.edu.au/Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.Ceres: A Potentially Habitable World?NASA's New Heliospheric MissionSpirit Nanosat's Milestone Achievement(00:00) New study claims the dwarf planet Ceres could once have been habitable enough for life(05:14) The Interstellar Mapping and Acceleration Probe will study the heliosphere(15:58) New study finds tropical fish are colonising new habitats because of ocean warming(18:07) Khloe Kardashian reportedly claims she's seen UFOs and experienced paranormal activity
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  • Mercury's Shrinking Secrets: Insights into the Solar System's Smallest Planet
    (00:00:00) Mercury's Shrinking Secrets: Insights into the Solar System's Smallest Planet (00:00:43) Mercury's Ongoing Shrinkage (00:03:11) NASA's Carruthers Geocorona Observatory (00:11:52) Insights from Martian Meteorite NWA 16254 (00:14:23) Tech News In this episode of SpaceTime, we explore the intriguing dynamics of Mercury's shrinking size, embark on a mission to unveil Earth's elusive exosphere, and uncover the secrets of ancient volcanic activity on Mars.Mercury's Ongoing ShrinkageRecent research published in AGU Advances reveals that Mercury continues to shrink as it cools, a process that has been ongoing since its formation 4.6 billion years ago. Scientists have estimated that the planet's radius has contracted by between 2.7 to 5.6 kilometres due to cooling-induced faulting. This study employs new methods to provide a more accurate understanding of Mercury's long-term thermal history, which could also be applied to other planetary bodies, including Mars.NASA's Carruthers Geocorona ObservatoryNASA has launched the Carruthers Geocorona Observatory to study Earth's invisible halo, the exosphere. This mission aims to capture the first continuous observations of the Geocorona, revealing the dynamics of hydrogen atoms escaping into space. Understanding the exosphere's response to solar activity is crucial for predicting space weather events that could affect astronauts on missions to the Moon and beyond. The observatory will provide insights into how Earth retains water and may even aid in the search for exoplanets with similar atmospheric conditions.Insights from Martian Meteorite NWA 16254A meteorite discovered in the Zaharov Desert is shedding light on Mars's ancient volcanic systems. The rock, classified as NWA 16254, offers unprecedented insights into the planet's magmatic processes, indicating a two-stage crystallisation process that occurred under varying pressure conditions. This discovery could help scientists understand Mars's thermal history and its volcanic evolution over billions of years, raising questions about the planet's past and its potential for hosting life.www.spacetimewithstuartgary.com✍️ Episode ReferencesAGU Advanceshttps://agu.onlinelibrary.wiley.com/journal/23337380NASA Geocorona Observatoryhttps://www.nasa.gov/Planetary Science Journalhttps://iopscience.iop.org/journal/2632-3338Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.Mercury's Ongoing ShrinkageNASA's Carruthers Geocorona ObservatoryInsights from Martian Meteorite NWA 16254
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  • Stardust from Beyond: Unveiling the Secrets of Asteroid Bennu and Saturn's Mysteries
    (00:00:00) Stardust from Beyond: Unveiling the Secrets of Asteroid Bennu and Saturn's Mysteries (00:00:47) Scientists have discovered minerals older than our solar system embedded in asteroid Bennu (00:10:22) Scientists using NASA's Webb telescope have uncovered mysterious features in Saturn's atmosphere (00:14:58) NASA's Parker Solar Probe completes 25th close approach to the sun (00:17:27) The Science Report In this episode of Space Time, we uncover groundbreaking discoveries that challenge our understanding of the cosmos. Join Stuart Gary as he discusses the astonishing findings from the asteroid Bennu, revealing minerals older than our solar system itself. Delve into the unexpected features observed in Saturn's atmosphere and learn about the Parker Solar Probe's close flyby of the Sun. This episode is packed with insights that could reshape our knowledge of planetary formation and cosmic history.Chapters:(00:00) This is space time series 28 episode 117 for broadcast on 29 September 2025(00:47) Scientists have discovered minerals older than our solar system embedded in asteroid Bennu(10:13) Scientists using NASA's Webb telescope have uncovered mysterious features in Saturn's atmosphere(14:59) NASA's Parker Solar Probe completes 25th close approach to the sun(17:41) A widely reported study on apple cider vinegar and weight loss has been retractedBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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  • Red Dots and Black Hole Stars: Unraveling Cosmic Secrets
    In this episode of SpaceTime, we dive into the cosmos to uncover the secrets of the early universe, explore the potential for black hole atmospheres, and examine the intriguing history of habitability on Mars, alongside the launch of a new deep space antenna by the European Space Agency.Mysterious Red Dots in the Early UniverseAstronomers have identified a population of enigmatic red dots in the early universe, potentially representing exotic stellar atmospheres around ancient black holes. These findings, published in Astronomy and Astrophysics, could bridge the gap in understanding the rapid growth of supermassive black holes. The Webb Space Telescope's observations suggest these objects might be a new class of celestial body, challenging existing models of galaxy formation and offering insights into the origins of galaxies.Multiple Episodes of Habitability on MarsNASA's Perseverance rover has provided compelling evidence that Mars's Jezero Crater experienced multiple episodes of liquid water flooding, each capable of supporting life. By analysing geochemical data, scientists have identified various minerals that reveal a dynamic history of volcanic activity and water interactions, suggesting a complex aqueous past that could have fostered life on the Red Planet.European Space Agency's New Deep Space DishThe European Space Agency is set to inaugurate its latest Australian deep space antenna at the Norcia tracking station in Western Australia. This 35-metre parabolic dish will enhance ESA's deep space communications capabilities, supporting missions and ensuring robust data transmission from spacecraft exploring our solar system. The new facility complements ESA's existing network of antennas worldwide, reinforcing their commitment to deep space exploration.www.spacetimewithstuartgary.com✍️ Episode ReferencesAstronomy and Astrophysicshttps://www.aanda.org/Journal of Geophysical Research Planetshttps://agupubs.onlinelibrary.wiley.com/journal/21699356European Space Agencyhttps://www.esa.int/Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.Mysterious Red Dots in the Early UniverseMultiple Episodes of Habitability on MarsEuropean Space Agency's New Deep Space Dish
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  • Exoplanets Galore: Celebrating 6,000 Discoveries and Exploring Venus
    In this episode of SpaceTime, we celebrate a major milestone in exoplanet discoveries, unravel the enigmatic surface of Venus, and delve into the intriguing tale of interstellar comet 3I ATLAS.Exoplanet Count Surpasses 6,000Astronomers have reached an impressive milestone, confirming their 6,000th exoplanet, a testament to the rapid pace of discoveries since the first detection of an exoplanet in 1995. This milestone not only highlights the evolving understanding of our galaxy but also raises questions about the myriad of planetary types discovered, from rocky planets to gas giants. While the hunt for Earth-like planets continues, the methods employed to discover these distant worlds remain a challenge, with fewer than 100 exoplanets directly imaged to date. The future holds promise with upcoming missions, including NASA's Nancy Chris Roman Space Telescope, which aims to further uncover the secrets of our cosmic neighbourhood.Decoding Venus's Mysterious SurfaceScientists are making strides in understanding the peculiar features of Venus, particularly the crown-like structures known as coronae. A new study suggests these features may be the result of magma plumes attempting to break through the planet's crust. By mapping the paths of these magmatic bursts, researchers are shedding light on Venus's geological history and its stark contrast to Earth, despite their similarities in size and formation. The findings could help explain why Venus has become a hellish environment, devoid of life, while Earth thrives.Interstellar Comet 3I ATLASAstronomers have captured stunning new images of interstellar comet 3I ATLAS, revealing a prominent tail and glowing coma as it journeys through the inner solar system. These observations provide valuable insights into the comet's composition and behaviour, suggesting that it shares similarities with comets originating from our own solar system. As 3I ATLAS approaches the Sun, its increasing activity offers a unique opportunity for scientists to study material that formed around distant stars. The comet is expected to re-emerge in November, promising further observations and discoveries.www.spacetimewithstuartgary.com✍️ Episode ReferencesNASA Exoplanet Science Institutehttps://exoplanets.nasa.gov/Proceedings of the National Academy of Scienceshttps://www.pnas.org/Gemini Observatoryhttps://www.gemini.edu/Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.Exoplanet Count Surpasses 6,000Decoding Venus's Mysterious SurfaceInterstellar Comet 3I ATLAS
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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.
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