SpaceTime: Your Guide to Space & Astronomy

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.

Episodes

November 13, 2025 22 mins
(00:00:00) Cosmic Beginnings and Stellar Discoveries: Unveiling the First Stars and Secrets of the Moon
(00:00:47) Have astronomers finally seen the universe’s first stars
(00:04:06) Hidden secrets about the Moon and the asteroid Vesta
(00:10:45) Euclid peers deep into a stellar nursery full of baby stars
(00:16:05) The Science Report
(00:18:09) Skeptics guide to flat earthers falling flat on their face again

In this episode of Sp...
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(00:00:00) Decelerating Cosmos and Solar Secrets: Unravelling Dark Energy and the Sun's Magnetic Dance
(00:00:45) More confirmation that the Universe's expansion is slowing
(00:08:53) First glimpse of the Sun’s polar magnetic field in motion
(00:14:09) Space Weather events ramping up
(00:18:24) The Science Report
(00:20:29) Alex on Tech NEO the humanoid housekeeper

In this episode of SpaceTime, we explore significant revelations a...
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(00:00:00) Galactic Influences and Supermoons: Exploring Earth's Crust and Taikonaut Trials
(00:00:42) Earth's geology written in the stars
(00:10:30) Taikonauts stranded in space following space junk impact
(00:12:38) Biggest Supermoon of the year
(00:14:59) The Science Report
(00:17:20) Skeptics guide to jogging big foots

In this episode of SpaceTime, we delve into fascinating intersections of geology and astronomy that could re...
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In this episode of SpaceTime, we explore remarkable discoveries and hypotheses that could redefine our understanding of planetary atmospheres and our journey back to the Moon.
Phosphine Discovery in Brian Dwarf Wolf 1130C
For the first time, astronomers have detected phosphine in the atmosphere of the brown dwarf Wolf 1130C, raising intriguing questions about its presence and the chemistry of such celestial bodies. This discovery, re...
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In this episode of SpaceTime, we dive into groundbreaking astronomical discoveries that challenge our understanding of the universe.
The Most Massive Stellar Black Hole Merger Ever Observed
Astronomers have detected the most massive stellar black hole merger to date, cataloged as GW23 1123, which resulted in a black hole with a staggering mass of 225 times that of our Sun. This episode discusses the implications of this merger, obser...
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In this episode of SpaceTime, we explore a trio of intriguing astronomical phenomena that are reshaping our understanding of the cosmos.
Interstellar Comet 3I Atlas: A Close Encounter
Interstellar comet 3I Atlas has reached its perihelion, passing closest to the Sun without any signs of alien life forms, despite wild media speculation. This episode discusses how the comet maintained its expected trajectory and velocity, while also re...
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In this episode of SpaceTime, we delve into groundbreaking discoveries that could reshape our understanding of life on Mars and the cosmos beyond.
Martian Ice: A Potential Reservoir for Life
A recent study suggests that Martian ice may be the most promising location to search for signs of ancient microbial life. Researchers found that biomolecules from dormant microbes degrade significantly slower in pure water ice compared to Martia...
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(00:00:00) Lunar Relics and Interstellar Insights: Discoveries from the Moon and Comet 3I ATLAS
(00:00:46) Relics of the outer solar system discovered on the Moon
(00:03:30) Insights from interstellar comet 3I ATLAS
(00:07:31) SpaceX's Starship Mega rocket test flight
(00:23:54) The Science report
(00:31:46) Episode Wrap

In this episode of SpaceTime, we explore remarkable discoveries that provide new insights into our solar system...
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(00:00:00) Near Miss and Cosmic Spectacles: Asteroids, Comets, and Space Junk in Earth's Orbit
(00:00:46) Planet Earth experiences as asteroid near miss
(00:02:58) Two green comets lighting up the night skies
(00:07:31) Chinese space junk smashes into Western Australia
(00:09:09) The Science Report
(00:12:07) Skeptics guide to the magic healing Biomet
(00:15:15) Show Wrap-up

In this episode of SpaceTime, we dive into a series of a...
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In this episode of SpaceTime, we uncover the latest findings in Martian meteorology, delve into Earth's ancient tectonic activity, and prepare for humanity's return to the Moon.
Raging Winds on Mars: Unveiling Martian Weather Patterns
A groundbreaking study published in the journal Science Advances reveals that wind speeds on Mars can reach up to 160 km/h, significantly higher than earlier estimates. Lead author Valentin U.H. Meckel ...
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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 comparis...
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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 proxim...
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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 observat...
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In this episode of SpaceTime, we dive into the fascinating findings from Saturn's icy moon Enceladus, discuss delays in the Dream Chaser spaceplane's launch schedule, and celebrate NASA's breakthroughs in laser communications for deep space missions.
Enceladus: Unveiling Complex Chemistry
Recent discoveries reported in the journal Nature Astronomy reveal that Saturn's moon Enceladus is spewing complex organic molecules from its subsu...
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In this episode of SpaceTime, we explore the future of our universe, the latest advancements in mapping our Milky Way, and the pivotal role fungi played in the evolution of life on land.
The Universe's Fate: A Big Crunch in 20 Billion Years
A groundbreaking study published in the Journal of Cosmology and Astroparticle Physics reveals that the universe is approaching the midpoint of its 33 billion-year lifespan and may end in approxim...
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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. ...
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(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 anc...
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(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 S...
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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 Universe
Astronomers have identified a population of enigmatic red dots in the early universe, potentially represen...
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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 6,000
Astronomers 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 highl...
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