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PODCAST

SpaceTime: Your Guide to Space & Astronomy

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.

science astronomy

All Episodes

39:43

Earth's Elemental Mysteries, Ariel's Geological...

SpaceTime: Your Guide to Space & Astronomy ·

2025/02/14

SpaceTime Series 28 Episode 20The Astronomy, Space and Science News PodcastNew Discoveries on Earth's Elements, Uranus's Moon Ariel, and the Fate of Comet AtlasIn this episode of SpaceTime, we delve into a groundbreaking study that challenges long-held beliefs about the origins of Earth's missing moderately volatile elements, such as copper and zinc. This research suggests that rather than being lost during the early formation of the solar system, these essential elements were likely retained by the

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32:48

Earth's Water Origins, Bennu's Salty Secrets, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/02/12

SpaceTime Series 28 Episode 19The Astronomy, Space and Science News PodcastNew Insights into Earth's Water, Asteroid Bennu's Composition, and Marsquake TriggersIn this episode of SpaceTime, we investigate a groundbreaking study that challenges previous beliefs about when water arrived on Earth. New findings suggest that water may have come in during the later stages of Earth’s formation, providing fresh perspectives on the origins of life on our planet. The study highlights the importance of

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19:35

Asteroid Threats, Dark Matter Discoveries, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/02/10

SpaceTime Series 28 Episode 18The Astronomy, Space and Science News PodcastAsteroid Threat Level Rusty, Dark Matter Experiment, and Martian Lava RocksIn this episode of SpaceTime, we discuss the alarming increase in the threat level of near-Earth asteroid 2024 YR4, now assessed at a 2.3% chance of impacting Earth on December 22, 2032. With astronomers worldwide closely monitoring its trajectory, we explore the potential consequences of an impact from this asteroid, including the possibility of a

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22:55

Io's Volcanic Powerhouse, Ceres' Organic Origins, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/02/07

SpaceTime Series 28 Episode 17The Astronomy, Space and Science News PodcastVolcanic Activity on Io, Ceres and the Building Blocks of Life, and New Exoplanet Search TechnologyIn this episode of SpaceTime, we explore the astonishing discovery of the largest volcanic hotspot ever observed on Jupiter's moon, Io. NASA's Juno mission reveals a feature that dwarfs Earth's Lake Superior and produces eruptions with six times the energy output of all the world's power plants. This unprecedented volcanic

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23:53

Moon's Hidden Geology, Venus' DaVinci Mission, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/02/05

SpaceTime Series 28 Episode 16The Astronomy, Space and Science News PodcastNew Discoveries on the Moon, Venus Exploration, and Titan's AtmosphereIn this episode of SpaceTime, we delve into a groundbreaking study revealing that the Moon may not be as geologically inactive as previously believed. Observations of small ridges on the lunar far side suggest recent tectonic activity, indicating that the Moon's geological history is more dynamic than once thought. Researchers found that these features,

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29:08

Bennu's Building Blocks of Life, Asteroid YR4's...

SpaceTime: Your Guide to Space & Astronomy ·

2025/02/03

SpaceTime Series 28 Episode 15The Astronomy, Space and Science News PodcastBuilding Blocks of Life on Asteroid Bennu, New Asteroid Threat, and Lunar Dome MissionIn this episode of SpaceTime, we uncover groundbreaking discoveries from the asteroid Bennu, where scientists have detected the molecular building blocks of life in samples returned by NASA's Osiris Rex spacecraft. These findings indicate a rich history of salt water on Bennu, suggesting that the essential conditions for life may have been

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39:43

Moon Rock Asteroid Discovery, Lunar Landers Launch,...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/31

SpaceTime Series 28 Episode 14The Astronomy, Space and Science News PodcastAsteroid from the Moon, Lunar Landers, and Trump’s Mars AmbitionsIn this episode of SpaceTime, we explore the intriguing discovery of a small asteroid, designated 2024 PT5, which is believed to be a fragment of the Moon ejected into space by a historic impact. This 10-meter wide near-Earth object offers new insights into both asteroid and lunar science, as researchers confirm its composition aligns closely with lunar rock

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20:46

Unraveling Mars' Ancient Water History, Moon's...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/29

SpaceTime Series 28 Episode 13Mysteries of Water on Mars and the Origins of Earth's MoonIn this episode of SpaceTime, we explore groundbreaking discoveries about the history of water on Mars. New research reveals thousands of mounds on the Martian northern plains, rich in clay minerals, indicating that this area was once submerged under a vast ocean. These findings, reported in Nature Geoscience, suggest that the mounds preserve a complete geological history of water on Mars, making them prime

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31:22

Cosmic Mysteries of Fast Radio Bursts, Marsquakes...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/28

SpaceTime Series 28 Episode 12Unveiling the Mysteries of Fast Radio Bursts and Mars' GeologyIn this episode of SpaceTime, we delve into the enigmatic origins of fast radio bursts (FRBs), those mysterious cosmic phenomena that release immense energy in mere nanoseconds. Recent findings challenge existing theories about their sources, suggesting that some FRBs may originate from regions in ancient, dead galaxies, raising profound questions about the nature of these bursts and their potential as cosmic

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19:06

Ancient Martian Lakes, Quasar's Cosmic Illumination,...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/24

SpaceTime Series 28 Episode 11Ancient Water on Mars and the Birth of the Universe's LightsScientists have uncovered two sets of ancient wave ripples on Mars, revealing evidence of long-dried ponds and lakes that once existed on the Red Planet. Discovered by NASA's Curiosity rover, these ripples, formed approximately 3.7 billion years ago, indicate that shallow bodies of water were open to the Martian atmosphere, challenging previous climate models suggesting an ice-covered surface. This finding

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20:35

Gaia's Final Scan, Milky Way's Hidden Flares, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/22

SpaceTime Series 28 Episode 10Gaia's Sky Scanning Completion and Mid Infrared Flare from Sagittarius A*The European Space Agency's Gaia spacecraft has completed its sky scanning phase, marking a monumental achievement in astronomical missions. Over the past decade, Gaia has transformed our understanding of the Milky Way by mapping the positions and characteristics of billions of stars. This mission has provided unprecedented insights into the origins and evolution of our galaxy, revealing its

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38:54

Starship's Fiery Demise, New Glenn's Maiden Voyage,...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/20

SpaceTime Series 28 Episode 09Starship's Fiery End and Blue Origin's New Glenn DebutSpaceX's Starship experienced a dramatic explosion during its seventh test flight, marking both success and setback. While the super heavy booster was successfully caught by the launch tower's chopstick arms, the Starship upper stage exploded during ascent. Despite the fiery end, the mission demonstrated significant advancements in booster recovery technology.Blue Origin's New Glenn Maiden FlightBlue Origin's New

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23:11

Cosmic Radio Mysteries, Moon's Water Origins, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/17

SpaceTime Series 28 Episode 08Origins of Fast Radio Bursts UnveiledAstronomers have pinpointed the source of fast radio bursts, specifically linking them to magnetars, a type of highly magnetic neutron star. This breakthrough, reported in Nature, was achieved by analysing the scintillation of FRB2022 1022A, indicating its proximity to a magnetar within 10,000 kilometres. This discovery sheds light on the mysterious phenomenon, suggesting that all fast radio bursts might originate from similarly

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24:18

Dark Matter Dynamics, Solar Flare Trio, and Meteor...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/15

SpaceTime Series 28 Episode 07Dark Matter's Role in Milky Way's Stellar StreamsNew research suggests that dark matter may have influenced the formation of the GD-1 stellar stream in the Milky Way. A study in the Astrophysical Journal Letters proposes that a core-collapsing, self-interacting dark matter subhalo could explain the unusual spur and gap features observed in the stream. This finding could deepen our understanding of dark matter's properties and its influence on the universe.Sun's Triple

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34:45

Pluto-Charon Impact Insights, BepiColombo's Final...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/14

SpaceTime Series 28 Episode 06Formation of Pluto-Charon Binary SystemA new study reveals that the formation of the Pluto-Charon dwarf planet binary system may mirror that of the Earth-Moon system. The research, published in Nature Geoscience, suggests that both systems feature a secondary body significantly large in comparison to the primary, unlike other moons in our solar system. The findings could explain Pluto's active geology and potential subsurface ocean, highlighting the significance of

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26:06

Mars' Volcanic Awakening, Supernova 1987A's Secrets,...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/10

SpaceTime Series 28 Episode 05Volcanic Activity on MarsNew research suggests recent volcanic activity on Mars, with eruptions possibly occurring within the last 50,000 years. This discovery, based on satellite observations, highlights a mysterious dark deposit in Elysium Planitia, indicating explosive volcanism. The findings could mean Mars is still volcanically active, raising possibilities of habitable conditions due to interactions between magma and icy substrates.Mysteries of Supernova

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28:55

Challenging Dark Energy, Solar Wind Mysteries, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/08

SpaceTime Series 28 Episode 04Challenging the Existence of Dark EnergyA groundbreaking study from the University of Canterbury in New Zealand is challenging the long-held belief in dark energy, suggesting that the universe's expansion might not require this enigmatic force. The research proposes the "timescape" model, which accounts for variations in cosmic expansion rates by considering differences in gravitational time dilation. This model could potentially resolve some of the universe's biggest

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26:46

Parker Solar Probe's Record-Breaking Journey,...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/06

SpaceTime Series 28 Episode 03Parker Solar Probe's Historic JourneyNASA's Parker Solar Probe has made history by becoming the fastest man-made object, surviving a record-breaking close approach to the Sun's surface. The probe, travelling at an unprecedented speed of 155,520 kilometres per hour, flew just 6.1 million kilometres above the Sun, providing invaluable data to help scientists understand the Sun's impacts on the solar system, including Earth. This mission marks a significant achievement in

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37:44

Mars' Liquid Water Woes, Asteroid Discoveries, and...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/03

SpaceTime Series 28 Episode 02Liquid Water on Mars: A Mirage?A new study casts doubt on the existence of liquid water on Mars, challenging previous assumptions about recurring slope lineae and the potential for brine pools. Researchers argue that the Martian environment's low temperature and pressure make it unlikely for liquid water to exist, even in the form of salty brines. The findings question the habitability of the Red Planet by Earth standards.New Asteroids DiscoveredNASA's Webb Space

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32:45

Webb Telescope Confirms Hubble Tension, Vesta's...

SpaceTime: Your Guide to Space & Astronomy ·

2025/01/01

SpaceTime Series 28 Episode 01Webb Telescope Confirms Hubble TensionThe James Webb Space Telescope has confirmed the Hubble Tension, challenging the current understanding of cosmic theory. New observations reveal that the Universe is expanding faster now than during its early years, suggesting gaps in our understanding of cosmic physics. The study, led by Adam Rees and Thomas Barber, confirms the accuracy of Hubble's measurements, pointing to unknown factors in the Universe's expansion.Liquid

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1,210 results

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