SpaceTime with Stuart Gary

SpaceTime with Stuart Gary

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.

Episodes

Betelgeuse's Hidden Companion and the Dying Andromeda Galaxy: A Cosmic Tale

August 4, 2026 • 28 mins
SpaceTime Series 29 Episode 93 The strongest evidence yet that Betelgeuse is not alone Astronomers have finally demonstrated that the red supergiant star Betelgeuse has a binary companion star about two to three times the mass of the Sun. Is the mighty Andromeda galaxy dying A new study has found that star formation is winding down in our nearest big neighbouring galaxy Andromeda. The most volcanically active world in the Solar S...
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Unleashing a Wandering Black Hole and Chasing the Solar Eclipse

August 3, 2026 • 35 mins
SpaceTime Series 29 Episode 92 The monster that’s been let out of its cage Astronomers have for the first time discovered a monstrous supermassive black hole wandering unseen near the edge of a galaxy. Counting down to next week’s solar eclipse Spain, Portugal, Iceland, Greenland Russia and the arctic are about to experience a total solar eclipse as the Moon’s shadow sweeps across the surface of the Earth. The S...
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Comet Confusion and the Psyche Mission's Mars Encounter

August 1, 2026 • 23 mins
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LHS 1140b and the Quest for Habitable Atmospheres: Unveiling a Super Earth

July 29, 2026 • 31 mins
SpaceTime Series 29 Episode 90 Discovery of an atmosphere on a planet orbiting a red dwarf Astronomers think they may have detected an atmosphere on a super-Earth exo-planet orbiting in the habitable zone of a nearby red dwarf star. How mega-dust storms and the Sun affect Martian weather A new study has found that solar storms hitting Mars at the same time as planetary wide dust storms could cause major changes in Martian weather....
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A Splashdown Success and the Asteroid That Ended the Dinosaurs

July 27, 2026 • 31 mins
SpaceTime Series 29 Episode 89 A lucky 13th test flight for the world’s biggest rocket The world’s largest and most powerful rocket has successfully launched on its latest test flight bringing it a step closer to NASA’s Artemis program’s aim of returning humans to the lunar surface, and eventually on to Mars and beyond. Scientists identify the asteroid that killed the dinosaurs A new study has determined t...
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Barnard's Star and Beyond : Exploring Hellish Worlds and Australia's Space Partnerships

July 25, 2026 • 24 mins
SpaceTime Series 29 Episode 88 The hellish planets orbiting a nearby star Astronomers have painted the most detailed portrait yet of the planetary system orbiting Barnard’s Star – the Sun’s closest stellar neighbour after Alpha Centauri, just under six light-years away. Australia’s role in India’s manned space program India’s manned space program is moving ahead with the commissioning of a new s...
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Mars, Moon, and Charon: A Cosmic Exploration of Our Celestial Neighbours

July 22, 2026 • 19 mins
SpaceTime Series 29 Episode 87 Ancient impacts display the red planet’s past history A new study has shown how ancient Martian rocks exposed on the rim of Jezero Crater are preserving a 3.9-billion-year-old “weather report” from the solar system’s most dynamic era. Understanding of the Moon’s regolith for human habitation Scientists have mapped out the thickness of the Moon’s regolith, the lay...
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Asteroid Impacts and Alien Chemistry: Unveiling Earth's Cosmic History

July 20, 2026 • 23 mins
SpaceTime Series 29 Episode 86 The asteroid collision that changed life on Earth forever Astronomers have linked a massive collision in the main asteroid belt to a huge meteor bombardment in the inner solar system that may have changed life on Earth. Alien chemistry discovered in meteorite that hit New Jersey home Scientists have discovered high concentrations of salt in briny fluids that could potentially create molecules crucial ...
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Nuclear Watchdogs: Detecting Weapons in Space and NASA's Swift Rescue Mission

July 17, 2026 • 19 mins
SpaceTime Series 29 Episode 85 Detecting nuclear weapons in space New modelling says small cube-sat sized spacecraft not much bigger than a fridge could be used to detect the presence of nuclear weapons on satellites in space. NASA’s rescue mission to save the Swift space telescope reaches orbit NASA’s Swift re-boost rescue mission is finally on its way to intercept the gamma ray space telescope and try to save it from ...
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Cosmic Discoveries: Japan's Asteroid Encounter and the Life Potential of Europa

July 15, 2026 • 28 mins
SpaceTime Series 29 Episode 84 Japan swoops past a cosmic snowman shaped asteroid Japan’s Hayabusa2 spacecraft has just swooped past a tiny asteroid in deep space that’s shaped like a snow man. Revealing the secrets of the ice moon Europa A new study has shown that the Jovian Ice Moon Europa is reflecting radio signals in a strange unexpected way. What happens to Earth when the Sun dies A new study has provided astrono...
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Earth's Ancient Impact Revealed: Dating the Oldest Crater and China's Cosmic Quest

July 13, 2026 • 30 mins
SpaceTime Series 29 Episode 83 Earth’s oldest known asteroid impact crater dated in Western Australia Scientists have determined the most precise age yet for the oldest known impact crater on Earth finding it to be some 3.024 billion years old.   A Chinese spacecraft has just reached Earth’s second moon China’s Tianwen-2 spacecraft has arrived at a temporary second moon orbiting Earth -- although technic...
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Mars to Earth: China's Ambitious Sample Return Mission and Cosmic Anomalies

July 9, 2026 • 19 mins
SpaceTime Series 29 Episode 82 China’s Mars sample return mission set for 2028 China says its planning to launch a Mars sample return mission in two years bringing back at least 500 grams of Martian regolith by 2031. Is science wrong about the universe The universe should look the same in all directions on the large cosmic scale, but new data based on dark energy observations are suggesting otherwise. An ASSASSN reveals its ...
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How a Passing Star Redirected Comets and Redefined Our Milky Way Map

July 8, 2026 • 23 mins
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SpaceTime Series 29 Episode 81How a passing star redirected comets to the inner solar systemA fascinating new study reveals how a passing star, HD 7977, may have altered the trajectory of comets from the Oort Cloud, sending them cascading into the...
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The Big Freeze: Exploring Asteroid Impacts and the Mysteries of Uranus and Neptune

July 6, 2026 • 25 mins
SpaceTime Series 29 Episode 80 Did ancient asteroid impacts prevent Earth’s continents from forming A new study suggests the barrage of asteroid impacts that slammed into the ancient Earth during the Hadean Eon between 4.6 and four billion years ago may have prevented the formation of the planet’s first continents. Could the ice giants Uranus and Neptune really be magma worlds A new study suggests that the solar system...
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Stellar Forensics: How Neutron Stars Forge Heavy Elements

July 3, 2026 • 38 mins
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SpaceTime Series 29 Episode 79 How Neutron Stars make heavy elements Physicists have achieved a significant breakthrough in understa...
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Cosmic Dawn: Unveiling the Galaxy MXDFZ 4.4 and the Secrets of Reionization, Comet 3I ATLAS Origins

July 1, 2026 • 21 mins
SpaceTime Series 29 Episode 78 Discovering how the cosmic dark ages ended Astronomers have discovered an early galaxy during the Era of Reionization –when the universe was transformed from the cosmic dark ages – when the cosmos went from being opaque to becoming transparent like it is today. New clues about the origins of interstellar comet 3i Atlas Astronomers using NASA’s Webb space telescope have discovered new...
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BepiColombo's Mercury Milestone: Navigating to the Solar System's Smallest Planet, Solar Secrets Unveiled

June 29, 2026 • 28 mins
SpaceTime Series 29 Episode 77 BepiColombo mission finally reaches Mercury space After eight years of powered flight towards the planet Mercury, mission managers have finally turned off the BepiColombo spacecraft’s propulsion engines in preparation for planetary orbit insertion. Is our Sun changing A new study claims the Sun has been mysteriously changing over the last forty years. Strange new type of x-ray flare detected in...
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Supernova Secrets: Uncovering a Stellar Explosion Near the Milky Way's Heart, Quantum Insights into the Big Bang

June 26, 2026 • 24 mins
SpaceTime Series 29 Episode 76 A possible supernova remnant discovered in the galactic centre Astronomers may have discovered a supernova remnant near the supermassive black hole at the centre of our galaxy. A new quantum view of Big Bang A new study could change what science knows about the Big Bang and the earliest moments of cosmic history. Work begins on new Western Australian ground station for lunar missions Construction has ...
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Lunar Mantle Mysteries: Unveiling the South Pole Aiken Basin, Mars' Garnet Evolution

June 24, 2026 • 18 mins
SpaceTime Series 29 Episode 75 The Moon’s oldest and largest impact crater A new study suggests the Moon’s oldest and largest impact crater – the two and a half thousand kilometre wide South Pole-Aitken basin -- could have excavated material so deep it included parts of the lunar mantle. New clues to how the red planet Mars evolved Scientists have discovered the mineral garnet in a Martian meteorite which may rev...
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Cosmic Collision Theories: Venus' Unusual Spin and Dark Matter's Enigma

June 22, 2026 • 23 mins
SpaceTime Series 29 Episode 74 Why Venus spins backwards A new study suggests that the strange retrograde spin of the planet Venus is the result of a massive impact event. Could Dark Matter explain what’s happening at the centre of our galaxy A new study has failed to rule out Dark Matter as the source of the so called Galactic Center Excess at the heart of the Milky Way galaxy. Trying to solve a meteor cold case Last month ...
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