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SpaceTime: Your Guide to Space & Astronomy
Stuart Gary
1000 episodes
1 day ago
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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Astronomy
Science,
Natural Sciences
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All content for SpaceTime: Your Guide to Space & Astronomy is the property of Stuart Gary and is served directly from their servers with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.
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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Astronomy
Science,
Natural Sciences
Episodes (20/1000)
SpaceTime: Your Guide to Space & Astronomy
The Universe's Countdown: New Insights into Cosmic Fate and Fungal Origins
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 approximately 20 billion years. Lead author Henry Tighe from Cornell University presents new data suggesting that the universe's cosmological constant may be negative, leading to a contraction and eventual collapse—a phenomenon referred to as the "big crunch." This research, based on observations from the Dark Energy Survey and the dark energy spectroscopic instrument DESI, challenges long-held beliefs about the universe's eternal expansion and opens new avenues for understanding cosmic evolution.
Mapping the Milky Way: Gaia's 3D View
The European Space Agency's Gaia Space Telescope has unveiled the most precise three-dimensional map of star-forming regions within our Milky Way galaxy. By analysing data from 44 million stars, Gaia has provided insights into the obscured molecular clouds where new stars are born. This innovative mapping technique allows astronomers to understand the distribution of ionised gas and the dynamics of star formation, offering a fresh perspective on our galaxy's structure and the processes that shape it.
Fungi: The Pioneers of Terrestrial Life
A recent study published in Nature Ecology and Evolution has identified that fungi played a crucial role in preparing Earth for life on land between 900 million and 1.4 billion years ago—much earlier than previously thought. Researchers from the Okinawa Institute of Science and Technology utilised a novel gene swap method to trace the evolution of fungi, suggesting that these organisms were instrumental in creating the first ecosystems and nutrient recycling processes that facilitated the emergence of terrestrial life. This discovery reframes our understanding of the timeline for life on Earth and highlights the importance of fungi in shaping our planet's biosphere.
www.spacetimewithstuartgary.com
✍️ Episode References
Journal of Cosmology and Astroparticle Physics
https://www.cosmos.esa.int/web/gaia
Nature Ecology and Evolution
https://www.nature.com/newe
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
The Universe's Fate: A Big Crunch in 20 Billion Years
Mapping the Milky Way: Gaia's 3D View
Fungi: The Pioneers of Terrestrial Life
Show more...
1 day ago
25 minutes

SpaceTime: Your Guide to Space & Astronomy
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 Mission
NASA 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 Achievement
The 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 References
Science Advances
https://www.science.org/journal/sciadv
NASA IMAP Mission
https://www.nasa.gov/imap
University of Melbourne Spirit Nanosatellite
https://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 Mission
Spirit 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
Show more...
4 days ago
21 minutes

SpaceTime: Your Guide to Space & Astronomy
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 Shrinkage
Recent 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 Observatory
NASA 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 16254
A 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 References
AGU Advances
https://agu.onlinelibrary.wiley.com/journal/23337380
NASA Geocorona Observatory
https://www.nasa.gov/
Planetary Science Journal
https://iopscience.iop.org/journal/2632-3338
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Mercury's Ongoing Shrinkage
NASA's Carruthers Geocorona Observatory
Insights from Martian Meteorite NWA 16254
Show more...
5 days ago
23 minutes

SpaceTime: Your Guide to Space & Astronomy
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 retracted

Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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6 days ago
24 minutes

SpaceTime: Your Guide to Space & Astronomy
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 Universe
Astronomers 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 Mars
NASA'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 Dish
The 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 References
Astronomy and Astrophysics
https://www.aanda.org/
Journal of Geophysical Research Planets
https://agupubs.onlinelibrary.wiley.com/journal/21699356
European Space Agency
https://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 Universe
Multiple Episodes of Habitability on Mars
European Space Agency's New Deep Space Dish
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1 week ago
27 minutes

SpaceTime: Your Guide to Space & Astronomy
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 6,000
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 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 Surface
Scientists 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 ATLAS
Astronomers 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 References
NASA Exoplanet Science Institute
https://exoplanets.nasa.gov/
Proceedings of the National Academy of Sciences
https://www.pnas.org/
Gemini Observatory
https://www.gemini.edu/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Exoplanet Count Surpasses 6,000
Decoding Venus's Mysterious Surface
Interstellar Comet 3I ATLAS
Show more...
1 week ago
23 minutes

SpaceTime: Your Guide to Space & Astronomy
Cosmic Webs and Dark Energy: A New Model for the Universe
In this episode of SpaceTime, we tackle the mysteries of the cosmos with a new mathematical model of the universe and ponder the age-old question: are we alone in the universe?
New Model of the Universe
Scientists have unveiled a groundbreaking mathematical model aimed at simplifying our understanding of the universe's evolution over the past 13.8 billion years. This innovative research, based on data from the Dark Energy Spectroscopic Instrument (DESI), offers fresh insights into the cosmic web's structure, revealing how dark energy influences cosmic expansion. Lead author Leonardo Gianni from the University of Queensland discusses how this model challenges existing paradigms and provides a clearer picture of the universe's complex behaviour, including the impact of voids and collapsing regions of matter.
Are We Alone?
A new study presented at the European Planetary Science Congress raises intriguing questions about the existence of intelligent alien civilizations. Researchers estimate that the nearest technological society in our galaxy could be over 33,000 light years away, with conditions on their home planets potentially mirroring those of Earth. The study highlights the challenges of sustaining advanced life and the long timelines required for such civilizations to coexist with humanity.
Partial Solar Eclipse
Today, a partial solar eclipse graced the skies over New Zealand, the South Pacific, and parts of Australia and Antarctica. As the Moon passed between the Earth and the Sun, observers witnessed a stunning celestial display with up to 70% of the Sun's face obscured. This remarkable event serves as a reminder of the intricate dance of celestial bodies that shape our night sky.
www.spacetimewithstuartgary.com
✍️ Episode References
Physical Review Letters
https://journals.aps.org/prl/
European Planetary Science Congress
https://www.epsc2025.eu/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
New Model of the Universe
Are We Alone?
Partial Solar Eclipse
New Model of the UniverseAre We Alone?Partial Solar Eclipse
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2 weeks ago
35 minutes

SpaceTime: Your Guide to Space & Astronomy
Galactic Jets and Black Hole Explosions: Unveiling Cosmic Mysteries
In this episode of SpaceTime, we explore the thrilling prospects of observing exploding black holes, an astonishing stellar jet on the outskirts of the Milky Way, and the meticulous preparations for an Earth observation satellite mission.
Exploding Black Holes on the Horizon
A groundbreaking study suggests that astronomers may soon witness a black hole explosion, an event theorised to occur once every 100,000 years. Researchers now believe there’s a 90% chance of observing such an explosion within the next decade, potentially revealing primordial black holes formed shortly after the Big Bang. These explosions could provide a comprehensive catalogue of all subatomic particles, including those yet to be discovered, fundamentally altering our understanding of the universe's origins.
Immense Stellar Jet Discovered
Astronomers have identified a colossal stellar jet erupting from a young star in the Milky Way's outskirts, specifically in the Sharpless 2284 region. This rare phenomenon involves twin jets of hot plasma extending over eight light years, driven by superheated gases falling onto the massive star. Captured by NASA's Webb Space Telescope, this discovery not only sheds light on star formation but also offers insights into the conditions of the early universe.
Preparing for Earth Observation
The European Space Agency is conducting rigorous tests for a future Earth observation satellite mission, including an airborne campaign in the Arctic. Scientists are evaluating a new imaging microwave radiometer designed to monitor sea ice and its evolution. This mission aims to gather vital data on climate change and the Arctic environment, contributing to a better understanding of global phenomena.
www.spacetimewithstuartgary.com
✍️ Episode References
Physical Review Letters
https://journals.aps.org/prl/
NASA
https://www.nasa.gov/
European Space Agency
https://www.esa.int/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Exploding Black Holes on the Horizon
Immense Stellar Jet Discovered
Preparing for Earth Observation
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2 weeks ago
22 minutes

SpaceTime: Your Guide to Space & Astronomy
Earth's Metal Recipe: Tectonics and the Supercontinent Split
In this episode of SpaceTime, we uncover the secrets of ancient geology, explore the watery past of an asteroid, and delve into the origins of globular clusters.
Supercontinent Breakup Revealed
Scientists have made significant strides in understanding the breakup of the supercontinent Rodinia, which occurred over 800 million years ago. Research conducted on rare minerals in Outback Australia has revealed how niobium-rich carbonatites rose through fault zones during tectonic rifting, providing insights into the geological processes that shaped our planet. These findings not only illuminate the history of Rodinia but also highlight the importance of niobium in modern technologies, such as electric vehicles and advanced alloys.
Water Activity on Asteroid Richie
Exciting new research confirms that liquid water once flowed on the parent body of the near-Earth asteroid Richie, challenging previous assumptions about water activity on asteroids. Analysis of rock samples returned by Japan's Hayabusa2 mission has shown evidence of water movement through Ryugu's rocks, indicating that carbon-rich asteroids may have played a more significant role in delivering water to Earth than previously thought. This discovery has profound implications for our understanding of planetary formation and the conditions that made Earth habitable.
Origins of Globular Clusters
Astronomers are closer to solving the mystery of globular clusters, dense stellar systems that have puzzled scientists for centuries. Recent high-resolution computer simulations have revealed multiple pathways for their formation, suggesting that some may originate from satellite dwarf galaxies stripped of their outer stars during galactic mergers. This breakthrough could lead to new insights into dark matter and the formation of the universe's earliest stars.
www.spacetimewithstuartgary.com
✍️ Episode References
Geological Magazine
https://www.tandfonline.com/journals/tgeo20
Nature
https://www.nature.com/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Supercontinent Breakup Revealed
Water Activity on Asteroid Richie
Origins of Globular Clusters
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2 weeks ago
26 minutes

SpaceTime: Your Guide to Space & Astronomy
Mars' Microbial Secrets: Potential Biosignatures Uncovered
In this episode of SpaceTime, we dive into groundbreaking discoveries on Mars, the intriguing atmosphere of Makemake, and the awe-inspiring total lunar eclipse that captivated millions.
Potential Biosignatures on Mars
NASA scientists have revealed that samples collected by the Perseverance rover from Jezero Crater may hold the best chance yet of uncovering evidence of past microbial life. The samples, taken from the rock formation known as Chiava Falls, exhibit characteristics that could indicate potential biosignatures. These findings suggest that Mars may have been habitable for longer than previously thought, challenging earlier assumptions about the planet's history.
Atmosphere Discovered on Makemake
In a remarkable discovery, astronomers have detected indications of a methane gas atmosphere on the distant dwarf planet Makemake. This finding, made using NASA's Webb Space Telescope, suggests the presence of a tenuous atmosphere or possibly cryovolcanic activity. Makemake, which resides in the Kuiper Belt, is now only the second known trans-Neptunian object, after Pluto, to have confirmed gaseous presence, revealing its dynamic nature and potential for active geology.
Total Lunar Eclipse
A stunning total lunar eclipse has mesmerised observers across Australia, Europe, Africa, and Asia. This celestial event transformed the full moon into a blood-red spectacle as Earth’s shadow obscured it. The eclipse lasted over five hours, showcasing the beauty of orbital mechanics and providing a thrilling experience for stargazers.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature
https://www.nature.com/
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Potential Biosignatures on Mars
Atmosphere Discovered on Makemake
Total Lunar Eclipse
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3 weeks ago
32 minutes

SpaceTime: Your Guide to Space & Astronomy
Water Origins: Comets, Satellites, and Rocket Fuels
Sponsor Details:
This episode of SpaceTime is brought to you with the support of Insta360. Capture your adventures with their latest game-changer, the GOUltra. For a special SpaceTime listener offer, visit store.insta360.com and use the promo code SPACETIME at checkout. Help support SpaceTime and get a great deal. Win/win!

In this episode of SpaceTime, we explore fascinating insights into the origins of Earth's water, the launch of Israel's advanced spy satellite, and the development of a groundbreaking high-energy rocket fuel.
About Earth's Water Origins
Recent findings suggest that the water in Comet 12P Pons-Brooks shares the same isotopic signature as Earth's oceans, bolstering the hypothesis that comets played a vital role in delivering water and essential ingredients for life to our planet. Observations from the Atacama Large Millimetre/Submillimeter Array telescope reveal that the deuterium to hydrogen ratio in the comet's water is remarkably similar to that found in Earth's oceans, providing compelling evidence that some Halley-type comets may have contributed to making Earth habitable.
Israel's New Spy Satellite Launch
Israel has successfully launched its Ofek 19 surveillance satellite to monitor terrorist activities across the Middle East. The satellite, equipped with advanced optical and radar systems, is designed to provide high-resolution imagery under various conditions. This launch comes amid ongoing tensions in the region, as Israel seeks to enhance its intelligence capabilities in response to recent attacks.
Revolutionary High-Energy Rocket Fuel
Scientists have synthesised a new high-energy compound, manganese diboride, which could revolutionise rocket fuel efficiency. This innovative fuel is over 20% more energetic by weight and 150% more energetic by volume than traditional aluminium-based fuels. The safety and efficiency of manganese diboride may significantly enhance payload capacities for space missions, paving the way for more ambitious exploration efforts.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature Astronomy
https://www.nature.com/nature-astronomy/
Journal of the American Chemical Society
https://pubs.acs.org/journal/jacsat
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Nigel About Earth's Water Origins
Israel's New Spy Satellite Launch
Revolutionary High-Energy Rocket Fuel
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3 weeks ago
20 minutes

SpaceTime: Your Guide to Space & Astronomy
Solar Flares, Jupiter's Core, and Life on Exoplanets
Sponsor Details:
This episode of SpaceTime is brought to you with the support of Insta360. Capture your adventures with their latest game-changer, the GOUltra. For a special SpaceTime listener offer, visit store.insta360.com and use the promo code SPACETIME at checkout. Help support SpaceTime and get a great deal. Win/win!

In this episode of SpaceTime, we delve into some astounding revelations in solar physics and planetary science, including the extreme temperatures of solar flares, new insights into the formation of Jupiter's core, and the tantalising possibility of life evolving on nearby exoplanets.
Solar Flares Hotter Than Ever Imagined
Recent research has revealed that solar flares can reach temperatures exceeding 60 million degrees Celsius, a staggering six and a half times hotter than previously believed. This groundbreaking finding, published in the Astrophysical Journal Letters, may provide answers to a long-standing mystery regarding solar flare spectral lines. The study suggests that positively charged particles, or ions, are heated more intensely than electrons during these explosive events, leading to a significant revision of our understanding of solar flare dynamics.
New Insights into Jupiter's Core Formation
A new study challenges previous theories regarding the formation of Jupiter's core, suggesting that a giant impact may not be responsible for the planet's dilute core structure. Instead, it appears that Jupiter's core formed gradually through the absorption of heavy and light materials during its evolution. This revelation, supported by advanced computer simulations, indicates that the core does not have a distinct boundary but rather blends smoothly into the surrounding hydrogen layers, reshaping our understanding of gas giant formation.
Could Life Thrive on Nearby Exoplanets?
Exciting new research posits that life may be evolving right now on some of Earth's nearest exoplanets, despite the high levels of radiation they receive. Scientists have drawn parallels between the harsh conditions on these exoplanets and early Earth, where life first emerged amidst extreme ultraviolet radiation. This research highlights the potential for habitability on planets like Proxima b, igniting further interest in the search for extraterrestrial life.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Monthly Notices of the Royal Astronomical Society
https://academic.oup.com/mnras
Cornell University
https://www.cornell.edu/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Solar Flares Hotter Than Ever Imagined
New Insights into Jupiter's Core Formation
Could Life Thrive on Nearby Exoplanets?
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3 weeks ago
20 minutes

SpaceTime: Your Guide to Space & Astronomy
Martian Mysteries: Unearthing Asteroid Remnants
Sponsor Details:
This episode of SpaceTime is brought to you with the support of Insta360. Capture your adventures with their latest game-changer, the GOUltra. For a special SpaceTime listener offer, visit store.insta360.com and use the promo code SPACETIME at checkout. Help support SpaceTime and get a great deal. Win/win!

In this episode of SpaceTime, we uncover groundbreaking discoveries in planetary science and solar physics, including the remnants of ancient asteroids on Mars, the recovery of the Mother's Day meteorite, and new insights into solar energetic particles.
Asteroid Remnants Found in Martian Mantle
A new study reveals that fragments from ancient asteroids, which significantly impacted Mars around 4.5 billion years ago, are now trapped within the planet's mantle. Data from NASA's Mars Insight lander has provided unprecedented insights into the Martian interior, showing that these remnants, some up to four kilometres wide, offer a unique glimpse into Mars' geological history. The findings suggest a sluggish evolution of the Martian mantle, contrasting sharply with Earth's dynamic tectonic processes.
Mother's Day Meteorite Discovery
In an exciting expedition, scientists from Curtin University have successfully recovered a meteorite that lit up the skies over Western Australia on Mother's Day. Using the Desert Fireball Network, researchers pinpointed the meteor's landing site and undertook a challenging journey to retrieve samples. Preliminary analysis indicates that the meteorite is an ordinary chondrite, providing valuable insights into its origins and the solar system's history.
Tracing Super Fast Electrons from the Sun
Astronomers have identified two distinct origins for energetic particles emitted by the Sun, thanks to observations from the European Space Agency's Solar Orbiter mission. The research highlights the difference between solar energetic electrons linked to solar flares and those associated with coronal mass ejections. Understanding these two types of solar energetic particles is crucial for predicting space weather and protecting satellites and astronauts from radiation hazards.
www.spacetimewithstuartgary.com
✍️ Episode References
NASA
https://www.nasa.gov/
Curtin University
https://www.curtin.edu.au/
European Space Agency
https://www.esa.int/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Show more...
4 weeks ago
23 minutes

SpaceTime: Your Guide to Space & Astronomy
Cosmic Revelations: The Brightest Fast Radio Burst and New Horizons' Hibernation Journey
In this episode of SpaceTime, we uncover some of the most exciting discoveries and developments in the universe, including the detection of the brightest fast radio burst ever observed, the New Horizons spacecraft's record-setting hibernation, and an innovative method for generating oxygen in space.
Brightest Fast Radio Burst Detected
Astronomers have identified what is being hailed as the brightest fast radio burst (FRB) ever recorded. Catalogued as FRB 2025 0316A, this extraordinary flash of energy was detected 130 million light years away in the spiral galaxy NGC 4141. The burst's unprecedented brightness and proximity provide scientists with a unique opportunity to study its origins and the environment surrounding it, potentially shedding light on the enigmatic sources of these fleeting cosmic phenomena.
New Horizons Enters Record Hibernation
NASA's New Horizons spacecraft has officially begun a record-setting hibernation period as it journeys through the Kuiper Belt, now over 9.2 billion kilometres from Earth. This hibernation will last until June 2026, surpassing its previous record of 273 days. Despite being in hibernation, the spacecraft will continue to collect valuable data on charged particles and dust in the outer heliosphere, which will be transmitted back to Earth upon reactivation.
Revolutionary Oxygen Generation in Space
In a significant advancement for future space missions, scientists have developed a new method for generating oxygen in space using neodymium magnets to enhance the electrolysis process. This innovative approach simplifies the extraction of oxygen bubbles from water, potentially replacing complex systems currently used in microgravity environments. By leveraging magnetic forces, this technique could improve the efficiency and reliability of oxygen production for astronauts.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
NASA
https://www.nasa.gov/
Nature Chemistry
https://www.nature.com/nchem/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Brightest Fast Radio Burst Detected
New Horizons Enters Record Hibernation
Revolutionary Oxygen Generation in Space
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1 month ago
36 minutes

SpaceTime: Your Guide to Space & Astronomy
Lunar Innovations: Creating Water and Fuel from Moon Dust and Psyche's Progress
In this episode of SpaceTime, we explore the latest developments in space exploration, including the European Space Agency's Juice mission, NASA's Psyche spacecraft, and groundbreaking advancements in lunar resource utilization.
Juice Mission Back on Track
The European Space Agency's Jupiter Icy Moons Explorer, Juice, is set for a critical flyby of Venus after overcoming a communications anomaly that temporarily severed contact with Earth. Engineers successfully restored communication with the spacecraft, which is now on its way to study Jupiter's Galilean moons—Ganymede, Callisto, and Europa—believed to harbor subsurface oceans that may support extraterrestrial life. The flyby will assist Juice in gaining the necessary speed for its journey to Jupiter, scheduled for arrival in 2031.
Psyche Spacecraft Calibration
NASA's Psyche spacecraft, launched in 2023, has successfully calibrated its onboard cameras as it journeys toward the metal-rich asteroid of the same name. The spacecraft aims to unlock the secrets of planetary cores and will utilize its cameras to capture images of Psyche's surface when it arrives in 2029. The calibration process includes imaging Earth and Mars to ensure the instruments perform optimally for their scientific objectives.
Creating Resources from Moon Dust
In a significant breakthrough, scientists have developed a method to produce water, oxygen, and methane fuel using lunar regolith, sunlight, and carbon dioxide from astronauts' breath. This innovation could drastically reduce the cost of transporting supplies from Earth to the Moon, paving the way for sustainable lunar bases and expanded space exploration capabilities.
www.spacetimewithstuartgary.com
✍️ Episode References
European Space Agency
https://www.esa.int/
NASA
https://www.nasa.gov/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
Juice Mission Back on TrackPsyche Spacecraft CalibrationCreating Resources from Moon Dust
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1 month ago
23 minutes

SpaceTime: Your Guide to Space & Astronomy
Stellar Success: SpaceX's Starship Soars and Mars' Mysteries Uncovered
In this episode of SpaceTime, we delve into thrilling advancements in space exploration, including a remarkable test flight of SpaceX's Starship, groundbreaking insights into Mars, and a classified mission from the United States Space Force.
Starship's Spectacular Test Flight
After overcoming numerous challenges, SpaceX's Starship has successfully completed its 10th test flight, launching from Texas and splashing down in the Indian Ocean. This flight demonstrated the rocket's capabilities, including a controlled splashdown of the Super Heavy booster and the successful deployment of Starlink satellite simulators. The mission provided critical data on the vehicle's performance during reentry, including stress testing its heat shield.
New Insights into Mars
The European Space Agency's Mars Express Orbiter has provided new observations of the Acheron Foci region, revealing the geological forces that have shaped the Red Planet. These findings highlight the impact of ancient geological upheaval and climatic shifts on Mars' landscape, offering clues about its past and the dynamic processes that continue to influence its environment today.
Space Force's Secret Shuttle Mission
The United States Space Force has launched its 8th X37B space shuttle mission, utilizing a SpaceX Falcon 9 rocket. This classified mission aims to test next-generation technologies, including advanced laser communication systems and quantum sensors. The versatile X37B continues to serve as a platform for various operational demonstrations and experiments in space.
www.spacetimewithstuartgary.com
✍️ Episode References
European Space Agency
https://www.esa.int/
NASA
https://www.nasa.gov/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
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1 month ago
33 minutes

SpaceTime: Your Guide to Space & Astronomy
Rogue Worlds and Solar Power
This episode is brought to you by the support of Insta360 - the leaders and innovators in portable 360 Photography. And they have just released the all new UltraGo...the take anywhere camera. Get all the details by visiting store.insta360.com and use the promo code SPACETIME at checkout for our special listener offer. 
In this episode of SpaceTime, we explore groundbreaking discoveries and developments in the realm of astrophysics and space exploration.Rogue Planets and Their Potential
A fascinating new study reveals that giant free-floating planets, known as rogue planets, may have the ability to form their own miniature planetary systems independently of a host star. Observations from the Webb Space Telescope have identified young rogue planets with masses between 5 to 10 times that of Jupiter. These dim objects, which emit primarily in the infrared spectrum, are believed to hold secrets about the formation of planetary systems. The findings indicate that disks of warm dust surrounding these planets could provide the necessary materials for planet formation, suggesting that such systems could exist even in the absence of stars.Europe's Space Rider Progresses
The European Space Agency's reusable Space Rider spacecraft has successfully completed a crucial test of its nose cone, marking another milestone in its development. This innovative spacecraft will allow ESA to conduct orbital missions and return scientific payloads to Earth. Designed to operate as an unmanned laboratory in low Earth orbit, Space Rider will support a variety of experiments and technology demonstrations, paving the way for Europe to enhance its capabilities in space exploration.Harvesting Solar Power from Space
Could space-based solar panels be the solution to our energy needs? Scientists are investigating two promising projects aimed at capturing solar energy in orbit. The Innovative Heliostat Swarm aims to create a network of mirrors that direct sunlight to a central receiver, converting it into electricity for transmission back to Earth. Meanwhile, the Mature Planar Array is closer to deployment but will only capture solar energy about 60% of the time. Despite current challenges in cost-effectiveness, these projects could lead to breakthroughs in sustainable energy.www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal
https://iopscience.iop.org/journal/2041-8205
European Space Agency
https://www.esa.int/
Journal of Solar Energy
https://www.journals.elsevier.com/solar-energy
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
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1 month ago
18 minutes

SpaceTime: Your Guide to Space & Astronomy
Cosmic Horror: The Discovery of a Wandering Black Hole and a Meteorite's Journey
This episode of SpaceTime is brought to you by Insta360's newest camera, the GoUltra. To get more details on this go anywhere camera, visit store.insta360.com and for our special offer use the code SPACETIME at checkout.
In this episode of SpaceTime, we uncover the mysteries lurking in the cosmos, from a rogue supermassive black hole to a meteorite crash in Georgia, and the origins of asteroids Bennu and Ryugu.
An Invisible Monster in the Cosmos
Astronomers have made a chilling discovery of a supermassive black hole, 600 million light years away, that has been lurking in the darkness of space. Using NASA's Hubble and Chandra space telescopes, along with a Very Large Array radio telescope, researchers identified this rogue black hole that consumes stars and planets that venture too close. The black hole was revealed through a tidal disruption event, where a star was torn apart and swallowed, offering a glimpse into the physics of these cosmic behemoths.
Meteorite Slams into Georgia Home
In an extraordinary event, a meteorite crashed through a house in Atlanta, Georgia, on June 26, narrowly missing the homeowner. Witnessed by hundreds, the fireball streaked across the sky before fragments penetrated the roof and ceiling. Planetary geologist Scott Harris retrieved samples for analysis, revealing the meteorite's origins in the asteroid belt, dating back 4.56 billion years, and potentially linked to the breakup of a larger asteroid.
Origins of Asteroids Bennu and Ryugu
Recent research suggests that both Bennu and Ryugu may share a common ancestry, originating from the same collisional family of asteroids known as Polana. Spectral data comparisons indicate similarities between these asteroids, supporting the hypothesis that they were formed from the remnants of a larger body that fragmented early in the solar system's history. This discovery opens new avenues for understanding the evolution of these near-Earth asteroids.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Planetary Science Journal
https://www.cambridge.org/core/journals/planetary-science-journal
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
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1 month ago
20 minutes

SpaceTime: Your Guide to Space & Astronomy
Cosmic Encounters: Asteroids, Moons, and the Milky Way's Future Unveiled
This episode of SpaceTime is brought to you with the support of Insta360. Capture your adventures with their latest game-changer, the GoUltra. For a special offer, visit store.insta360.com and use the promo code SPACETIME at checkout.
In this episode of SpaceTime, we explore thrilling recent discoveries and events in the cosmos, including close encounters with asteroids, a newly discovered moon around Uranus, and the cosmic dance of dwarf galaxies.
Earth Dodges Two Asteroid Near Misses
Planet Earth has narrowly avoided two asteroid near misses within days of each other. The first, asteroid 2025 PF2, zipped past at an altitude of just 22,000 kilometers, while the second, 2025 PU1, came even closer at 29,000 kilometers. Both asteroids, small yet significant, highlight the ongoing risks posed by near-Earth objects, with 2025 PU1 being particularly alarming as it was only detected hours after its closest approach.
A New Moon for Uranus
Astronomers have identified a new moon orbiting Uranus, bringing the total number of known satellites to 26. Detected using NASA's Webb Space Telescope, this moon, estimated to be about 10 kilometers in diameter, eluded previous observations, including those from the Voyager 2 mission. Its discovery adds to the complexity of Uranus's moon system and raises questions about the chaotic history of its rings and satellites.
Dancing Dwarf Galaxies and the Milky Way's Fate
A new study suggests that the fate of our Milky Way galaxy is intricately tied to the gravitational interactions with smaller dwarf galaxies as it approaches a merger with the Andromeda galaxy. By studying similar galactic systems, researchers aim to predict how these cosmic dances will influence the evolution of our galaxy over the next few billion years, providing insights into dark matter and cosmic structure.
www.spacetimewithstuartgary.com
✍️ Episode References
Monthly Notices of the Royal Astronomical Society
https://academic.oup.com/mnras
NASA's Webb Space Telescope
https://www.nasa.gov/mission_pages/webb/main/index.html
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
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1 month ago
27 minutes

SpaceTime: Your Guide to Space & Astronomy
The Comet That Cooled the Earth - Unpacking the Younger Dryas Mystery
In this episode of SpaceTime, we delve into intriguing new research that challenges our understanding of Earth's climatic history, the discovery of a rare astronomical phenomenon, and China's advancements in lunar exploration.
Did a Comet Trigger the Younger Dryas Cool Off?
A groundbreaking study has emerged suggesting that a massive comet may have instigated Earth's Younger Dryas cool off event, traditionally attributed to glacial meltwater. Analysis of ocean sediments published in the journal PLOS One reveals geochemical clues that support the hypothesis of Earth encountering a disintegrating comet around 12,800 years ago. This event could have led to rapid cooling, with temperatures plummeting by approximately 10 degrees Celsius within a year. The findings indicate a potential link between comet dust and significant climate shifts, inviting further investigation into this captivating theory.
Discovery of a Rare White Dwarf Merger Remnant
Astronomers have identified an ultra-massive white dwarf star resulting from the merger of two stars, rather than the evolution of a single star. This discovery, made possible by NASA's Hubble Space Telescope, suggests that such white dwarf mergers may be more common than previously thought. The object, catalogued as WD0525 526, is located 126 light years away and is about 20% more massive than our Sun. Hubble's ultraviolet observations revealed carbon in its atmosphere, a sign of its violent origin, challenging previous assumptions about white dwarf formation.
China Tests Its New Manned Lunar Lander
In a significant milestone for lunar exploration, China has successfully conducted a test flight of its new manned lunar landing craft, named Lanyu. This test, which included a controlled landing and takeoff, marks a crucial step in China's ambitions to send taikonauts to the Moon by 2030. The Lanyu is designed to carry astronauts from lunar orbit to the surface and back, with plans for a permanent lunar base in collaboration with Russia in the early 2030s.
www.spacetimewithstuartgary.com
✍️ Episode References
PLOS One
https://journals.plos.org/plosone/
Nature Astronomy
https://www.nature.com/natureastronomy/
NASA Hubble Space Telescope
https://www.nasa.gov/mission_pages/hubble/main/index.html
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
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1 month ago
19 minutes

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.