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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.
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21 APR 2025 · Hints of Alien Life, a Galactic Mystery, and Juno's Safe Mode Incident
In this episode of SpaceTime, we explore groundbreaking revelations suggesting the potential for alien life beyond Earth. Using NASA's Webb Space Telescope, astronomers have detected chemical signatures of dimethyl sulfide and dimethyl disulfide in the atmosphere of the exoplanet K2 18 b, a sub-Neptune world located 124 light years away in the habitable zone of its host star. While these findings are incredibly promising, researchers urge caution as they work to confirm these biosignatures through further observations.
A Surprising Spiral Galaxy from the Early Universe
Next, we dive into the discovery of a surprisingly large spiral galaxy dating back 11.4 billion years, which challenges current models of galaxy formation. This massive galaxy, dubbed the "Big Wheel," is three times larger than expected for its time, prompting astronomers to rethink how galaxies can grow and evolve in the early universe. The implications of this finding could reshape our understanding of cosmic structure and formation processes.
NASA's Juno Spacecraft in Safe Mode
Additionally, we discuss a recent anomaly that forced NASA's Juno spacecraft to enter safe mode during a close flyby of Jupiter. The spacecraft's precautionary measures allowed it to protect its systems and continue diagnostics, ensuring the mission's ongoing success as it gathers vital data about the gas giant and its moons.
00:00 Space Time Series 28 Episode 48 for broadcast on 21 April 2025
00:49 Potential biosignatures detected on K2 18 b
06:30 Implications for the search for extraterrestrial life
12:15 Discovery of an ancient spiral galaxy in the early universe
18:00 Challenges to current galaxy formation models
22:45 Juno spacecraft enters safe mode after anomaly
27:00 Summary of recent astronomical discoveries
30:15 Science report: Health benefits of sauerkraut and lunar dust solar panels
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✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/0004-637X
Nature Astronomy
https://www.nature.com/nature-astronomy/
Applied and Environmental Microbiology
https://aem.asm.org/
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21 APR 2025 · SpaceTime S28E48 S28E49 S28E50 w/c April 21, 2025 Space, Astronomy and Science Podcast. Series 28 Episode 48 *Have astronomers finally discovered hints of alien life in space Astronomers have detected the most promising signs yet of possible biosignatures beyond planet Earth. *A galactic mystery from the early Universe Astronomers have discovered a surprisingly large spiral galaxy in the early universe dating back some 11.4 billion years to a time when such large galaxies are difficult to explain. *NASA's Juno spacecraft suffers a sudden anomaly NASA’s Juno Spacecraft has been forced to enter it’s safe mode after suffering a sudden unexpected anomaly. *The Science Report A new study has shown that sauerkraut is good for gut health. Study shows lunar dust could one day be used to make solar panels on the Moon. Rising temperatures could increase the burden of mental and behavioural disorders. Skeptics guide to Indian court ridiculous ruling that astrology is science Series 28 Episode 49 *Lucy takes a close look at the asteroid Donaldjohanson NASA’sLucy mission to explore Jupiter’s Trojan asteroids is about to undertake a close flyby of the main belt asteroid Donaldjohanson. *A new upper limit for the mass of Neutrinos A new study has discovered the mass of one of the most enigmatic particles in the universe -- the neutrino -- is less than 0.45 electronvolts -- less than one-millionth the mass of an electron. *Intriguing Martian rocky outcrops discovered on the rim of Jezero Crater NASA’s Mars Perseverance Rover has discovered a cornucopia full of intriguing rocky outcrops on the rim of Jezero Crater. *The Science Report The weather now really does suddenly go from boiling hot to freezing cold more than it used to. A new study claims that lab-grown chicken nuggets could be a reality in the near future. Psychologists are now warning about the potential dangers of having a relationship with your AI chatbot. Alex on Tech: Google loses major court case Series 28 Episode 50 *New evidence overturns theories on the origin of Earth’s water Scientists have uncovered crucial new evidence overturning earlier hypothesis on the origin of Earth’s water. *The strange mystery of the red planet’s Magnetic field A new study suggests strange magnetic signatures detected on the red planet Mars could be due to a partially molten core – only covering its southern hemisphere. *The Lyrids Meteor shower now on full display One of humanity’s oldest known meteor showers the Lyrids now on full display in the night sky. *The Science Report Two common food additives could be linked with an increased risk of type 2 diabetes. Palaeontologists have identified footprints of armoured ankylosaur dinosaurs for the first time. The world’s first whole eye and face transplant. Skeptics guide to health advice on social media. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests includes: Nikku Madhusudhan from Cambridge University Themiya Nanayakkara from Swinburne University Robert Massey, Deputy Executive Director of the Royal Astronomical Society And our Regulars: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌
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21 APR 2025 · Unlocking Stellar Secrets in Messier 67: The Role of Stellar Seismology
In this episode of SpaceTime, we dive into the remarkable findings from the study of the open star cluster Messier 67, where astronomers have employed stellar seismology to unravel the evolutionary history of its stars. Located approximately 2,700 light years away, Messier 67 is a treasure trove of information, containing around 500 stars, including white dwarfs and sun-like stars, all born from the same molecular gas cloud about 4 billion years ago. This unique cluster provides a valuable perspective on stellar evolution and the dynamics of our galaxy.
Stellar Seismology: A New Tool for Understanding Star Ages
Lead author Claudia Reyes from the University of New South Wales explains how the study utilized oscillation frequencies of stars to determine their ages—a challenging task in astronomy. By analyzing how stars vibrate, researchers can infer critical details about their internal structure and evolutionary processes. This innovative method not only enhances our understanding of individual stars but also offers insights into the formation and evolution of galaxies, including our own Milky Way.
Implications for Our Sun's Future
The implications of this research extend to the future of our own Sun. As stars evolve, they undergo significant changes, and understanding these processes in Messier 67 helps scientists predict what will happen as our Sun ages. Reyes discusses the fascinating concept of "starquakes," which are akin to earthquakes but occur within stars, providing further insights into stellar dynamics.
00:00 Space Time Series 28 Episode 48 for broadcast on 20 April 2025
00:49 Overview of Messier 67 and its significance
06:30 Stellar seismology and its role in determining star ages
12:15 Implications for the Sun's future evolution
18:00 Understanding starquakes and their effects
22:45 Future directions for research in galactic archaeology
27:00 Summary of recent astronomical discoveries
30:15 Science report: Advances in exoplanet detection techniques
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✍️ Episode References
Nature
https://www.nature.com/
Astrophysical Journal
https://iopscience.iop.org/journal/0004-637X
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Transcribed
19 APR 2025 · Exploring Uranus's Rotational Secrets, New Crew at the ISS, and the Dangers of Space Travel
In this episode of SpaceTime, we delve into groundbreaking measurements of Uranus's rotational rate, achieved with unprecedented accuracy by NASA's Hubble Space Telescope. This new technique, which analyzed over a decade of observations of the planet's auroras, provides essential insights into Uranus's complex atmosphere and magnetic field, establishing a vital reference point for future planetary studies.
A New Crew Arrives at the International Space Station
Next, we cover the arrival of a new crew aboard the International Space Station, as the Russian Soyuz MS-27 spacecraft successfully docks with the orbiting outpost. The crew, consisting of two Russians and an American, will spend eight months conducting over 200 experiments and performing maintenance on the station.
The Dangers of Going into Space
Additionally, we discuss the various dangers associated with human spaceflight, including the effects of microgravity on the human body, radiation exposure, and the physical challenges astronauts face during long-duration missions. Experts from NASA highlight the ongoing research to ensure astronaut safety as humanity prepares for deeper space exploration.
00:00 Space Time Series 28 Episode 47 for broadcast on 18 April 2025
00:49 Hubble's measurements of Uranus's rotational rate
06:30 Implications for future planetary research
12:15 New crew arrival at the ISS aboard Soyuz MS-27
18:00 Overview of the crew's mission and experiments
22:45 Dangers of human spaceflight and health impacts
27:00 Summary of recent space exploration news
30:15 Science report: Lab-grown meat flavor innovations
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✍️ Episode References
Nature
https://www.nature.com/
NASA
https://www.nasa.gov/
Nature Communications
https://www.nature.com/ncomms/
For the commercial-free editions of this podcast, become a supporter: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
Transcribed
17 APR 2025 · SpaceTime Series 28 Episode 46
The Astronomy, Space and Science News Podcast
Unraveling Black Hole Jets, Martian Dust Devils, and Earth's Tectonic Mysteries
In this episode of SpaceTime, we explore groundbreaking research that sheds light on how black holes generate their powerful plasma jets. A new study reveals that these jets are formed when superheated gas experiences a rapid shrinking towards the black hole's event horizon, offering insights into galaxy evolution and the fundamental physics of black holes. We discuss the implications of these findings for understanding cosmic phenomena and the behavior of matter in extreme gravitational fields.
NASA's Mars Perseverance Rover Observes Martian Twisters
Next, we delve into the fascinating observations made by NASA's Mars Perseverance Rover, which has captured images of dust devils swirling on the rim of Jezero Crater. These dust devils, including one consuming another, provide important data on Martian atmospheric conditions and help refine our climate models of the Red Planet. The rover's findings highlight the role of these phenomena in influencing Martian weather and surface interactions.
New Insights into Earth's Tectonic Plates
Additionally, we discuss a new study that uncovers how anomalies in the Earth's mantle transition zone affect the movement of tectonic plates. The research suggests that thick basaltic rock compositions within this zone can influence the trajectory and speed of subducting plates, which is vital for understanding the recycling of surface materials and the long-term stability of Earth's climate. This discovery opens new avenues for studying plate tectonics and its implications for our planet's habitability.
00:00 Space Time Series 28 Episode 46 for broadcast on 16 April 2025
00:49 Mechanisms behind black hole jet formation
06:30 Implications for galaxy evolution and black hole physics
12:15 Mars Perseverance Rover's dust devil observations
18:00 Importance of dust devils in Martian climate studies
22:45 Insights into Earth's tectonic plate movement
27:00 Summary of recent geological findings
30:15 Science report: Social media's impact on body image
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✍️ Episode References
Publications of the Astronomical Society of Japan
https://www.jstage.jst.go.jp/browse/pasj
Nature
https://www.nature.com/
PLOS One
https://journals.plos.org/plosone/
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Transcribed
16 APR 2025 · SpaceTime Series 28 Episode 45
The Astronomy, Space and Science News Podcast
Uncovering Lunar Water Discrepancies, Asteroid 2024 YR4's Moon Targeting, and Stellar Seismology Insights
In this episode of SpaceTime, we delve into the intriguing findings from China's Chang'e 6 sample return mission, which reveal that the Moon's far side is significantly drier than its near side. This discovery sheds light on the geochemical differences between the two hemispheres and offers fresh perspectives on lunar evolution and the implications for the Moon's origin.
Asteroid 2024 YR4: From Earth Threat to Lunar Target
Next, we track the journey of asteroid 2024 YR4, which initially garnered attention as a potential Earth impactor. However, new observations indicate that this 60-meter-wide asteroid is now on a collision course with the Moon, raising the likelihood of an impact to 3.5%. We discuss its unique characteristics and the ongoing studies aimed at understanding its origins and physical properties.
Singing Stars and Galactic History
Additionally, we explore how stellar seismology is revealing the evolutionary history of stars in the open cluster Messier 67. By analyzing the oscillations of these stars, astronomers can map the history of the Milky Way and gain insights into stellar evolution. This innovative approach provides a deeper understanding of the life cycles of stars and their contributions to galactic archaeology.
00:00 Space Time Series 28 Episode 45 for broadcast on 14 April 2025
00:49 Findings from Chang'e 6 about lunar water distribution
06:30 Implications for lunar evolution and origin theories
12:15 Asteroid 2024 YR4's trajectory and characteristics
18:00 Transition from Earth impactor to Moon target
22:45 Stellar seismology insights from Messier 67
27:00 Summary of recent astronomical discoveries
30:15 Science report: Genetic engineering and the dire wolf
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✍️ Episode References
Nature
https://www.nature.com/
Astrophysical Journal Letters
https://iopscience.iop.org/journal/0004-637X
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
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15 APR 2025 · SpaceTime Series 28 Episode 45, 46 & 47
The Astronomy, Space and Science News Podcast
Exploring the Lunar Far Side's Water Mystery, Asteroid 2024 YR4's New Trajectory, and Stellar Seismology Revealing Galactic Histories
In this episode of SpaceTime, we investigate the intriguing findings from China's Chang'e 6 mission, which reveal that the Moon's far side is significantly drier than its near side. The analysis of lunar rocks suggests a stark contrast in water distribution, with implications for our understanding of the Moon's evolution and the giant impact hypothesis that explains its formation.
Asteroid 2024 YR4's Shift in Focus
Next, we discuss Asteroid 2024 YR4, which initially posed a potential threat to Earth but is now projected to target the Moon. As scientists gather more data, the likelihood of a lunar impact has increased, prompting a closer examination of this unique space rock's properties and origins, as well as its potential consequences for the Moon.
Unveiling Galactic Histories Through Stellar Seismology
Additionally, we delve into the study of Messier 67, an open star cluster where astronomers have employed stellar seismology to trace the evolutionary paths of its stars. This research not only enhances our understanding of the Milky Way's history but also offers insights into the future of our own Sun. We explore how the oscillations of stars can reveal their internal structures and ages, providing a new tool for galactic archaeology.
00:00 Space Time Series 28 Episode 45 for broadcast on 13 April 2025
00:49 Findings from Chang'e 6 on lunar water distribution
06:30 Implications for lunar evolution and geology
12:15 Asteroid 2024 YF4's trajectory changes
18:00 Properties and potential lunar impact of YF4
22:45 Stellar seismology insights from Messier 67
27:00 Summary of recent astronomical discoveries
30:15 Science report: Links between diabetes drugs and dementia risk
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Transcribed
11 APR 2025 · SpaceTime Series 28 Episode 44
The Astronomy, Space and Science News Podcast
New Discoveries About Uranus, the 2025 Space Environment Robert on Space Junk, and NASA's Starliner Testing Updates
In this episode of SpaceTime, we explore groundbreaking insights into the atmosphere of Uranus, derived from two decades of observations by NASA's Hubble Space Telescope. Uranus, an ice giant with its unique tilt and rotation, reveals complex atmospheric dynamics that scientists are just beginning to understand. We discuss the implications of Hubble's findings, including the distribution of methane and the changing aerosol structures as the planet approaches its northern summer solstice in 2030.
The 2025 Space Environment Robert
Next, we delve into the European Space Agency's 2025 Space Environment Robert, highlighting the growing challenge of space debris orbiting Earth. With thousands of defunct satellites and rocket stages contributing to the clutter, we examine the risks posed to operational spacecraft and the urgent need for international debris reduction measures. The report underscores the potential for catastrophic chain reactions in space, known as Kessler Syndrome, and the pressing need for sustainable practices in orbit.
Nasa and Boeing's Starliner Testing Preparations
Additionally, we provide updates on NASA and Boeing's ongoing efforts to address issues with the CST-100 Starliner spacecraft. Following a series of test flight challenges, the teams are preparing for new evaluations and propulsion system tests aimed at certifying Starliner for future crewed missions. We discuss the history of Starliner's difficulties and what lies ahead in its journey to becoming a reliable transport vehicle for astronauts.
00:00 Space Time Series 28 Episode 44 for broadcast on 11 April 2025
00:49 New insights into Uranus's atmospheric dynamics
06:30 Hubble's long-term observations and their implications
12:15 Overview of the 2025 Space Environment Robert
18:00 The growing threat of space debris
22:45 NASA and Boeing's Starliner testing updates
27:00 Summary of recent space exploration developments
30:15 Science report: Microplastics and health impacts
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✍️ Episode References
European Space Agency
https://www.esa.int/
NASA
https://www.nasa.gov/
Nature Communications
https://www.nature.com/ncomms/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
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11 APR 2025 · The Astronomy, Space and Science News Podcast
Innovative Techniques in Dark Matter Research: Atomic Clocks and Cavity-Stabilized Lasers
In this episode of SpaceTime, we explore a groundbreaking approach to uncovering the mysteries of dark matter through the innovative use of atomic clocks and cavity-stabilized lasers. Dark matter, which constitutes about 80% of the universe's mass, remains largely elusive, and scientists are still striving to understand its true nature. We discuss insights from Ashlee Caddell of the University of Queensland, who explains how her team's research leverages ultra-stable lasers and atomic clocks to detect subtle changes that could indicate the presence of dark matter acting as a wave.
Understanding Dark Matter Through Oscillations
Caddell elaborates on how the unique properties of dark matter lead to oscillations that could be measured by comparing the ticking rates of separated atomic clocks. This method allows researchers to probe previously invisible forms of dark matter that do not emit light or energy. We examine the implications of these findings for our understanding of the universe and the potential to explore a broader range of dark matter scenarios.
Challenges in Dark Matter Detection
The discussion also touches on the historical context of dark matter research, including the challenges faced in detecting weakly interacting massive particles (WIMPs) and the emergence of alternative theories such as axions. Caddell shares her insights on the creative approaches scientists are taking in the ongoing quest to identify and understand dark matter's role in cosmic structures.
00:00 Space Time Series 28 Episode 44 for broadcast on 11 April 2025
00:49 New techniques for dark matter detection using atomic clocks
06:30 The concept of dark matter acting as a wave
12:15 Historical context and challenges in dark matter research
18:00 Insights into oscillating dark matter fields
22:45 Discussion on alternative dark matter theories
27:00 Summary of the implications for astrophysics
30:15 Science report: Advances in atomic clock technology
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✍️ Episode References
Physical Review Letters
https://journals.aps.org/prl/
University of Queensland
https://www.uq.edu.au/
Nature Reviews Physics
https://www.nature.com/natrevphys/
Transcribed
9 APR 2025 · SpaceTime Series 28 Episode 43
The Astronomy, Space and Science News Podcast
Exploring Venusian Volcanoes, the End of the Gaia Mission, and SpaceX's Historic Polar Orbit Launch
In this episode of SpaceTime, we delve into the geological mysteries of Venus, where new research suggests that convection in its crust may explain the planet's numerous volcanoes. Unlike Earth, which supports life, Venus is a harsh environment with extreme temperatures and a crushing atmosphere. We discuss how this convection could indicate a more active geological landscape than previously understood, shedding light on the planet's evolution.
The Conclusion of the Gaia Mission
Next, we mark the end of an era as the European Space Agency officially powers down the Gaia spacecraft. After over a decade of groundbreaking work mapping the Milky Way, Gaia has provided invaluable data that has transformed our understanding of the galaxy. We highlight the mission's key achievements and the lasting legacy of its extensive data archive that will continue to inform astronomical research for years to come.
SpaceX's Manned Polar Orbit Mission
Additionally, we celebrate SpaceX's successful launch of its first manned mission to orbit above the Earth's poles. This historic flight, which included a variety of scientific experiments, showcases the capabilities of modern space travel and the potential for future polar exploration. We detail the mission's objectives, the crew's experiences, and the significance of this achievement in the context of human spaceflight.
00:00 Space Time Series 28 Episode 43 for broadcast on 9 April 2025
00:49 New study on volcanic activity on Venus
06:30 Implications of convection in Venus's crust
12:15 The end of the Gaia mission and its contributions
18:00 Highlights of Gaia's discoveries and data legacy
22:45 SpaceX's first manned polar orbit mission
27:00 Summary of recent space exploration milestones
30:15 Science report: Antibiotic use in livestock and environmental impacts
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✍️ Episode References
Physics of Earth and Planetary Interiors
https://www.journals.elsevier.com/physics-of-the-earth-and-planetary-interiors
European Space Agency
https://www.esa.int/
Nature Communications
https://www.nature.com/ncomms/
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21 APR 2025 · SpaceTime S28E48 S28E49 S28E50 w/c April 21, 2025 Space, Astronomy and Science Podcast. Series 28 Episode 48 *Have astronomers finally discovered hints of alien life in space Astronomers have detected the most promising signs yet of possible biosignatures beyond planet Earth. *A galactic mystery from the early Universe Astronomers have discovered a surprisingly large spiral galaxy in the early universe dating back some 11.4 billion years to a time when such large galaxies are difficult to explain. *NASA's Juno spacecraft suffers a sudden anomaly NASA’s Juno Spacecraft has been forced to enter it’s safe mode after suffering a sudden unexpected anomaly. *The Science Report A new study has shown that sauerkraut is good for gut health. Study shows lunar dust could one day be used to make solar panels on the Moon. Rising temperatures could increase the burden of mental and behavioural disorders. Skeptics guide to Indian court ridiculous ruling that astrology is science Series 28 Episode 49 *Lucy takes a close look at the asteroid Donaldjohanson NASA’sLucy mission to explore Jupiter’s Trojan asteroids is about to undertake a close flyby of the main belt asteroid Donaldjohanson. *A new upper limit for the mass of Neutrinos A new study has discovered the mass of one of the most enigmatic particles in the universe -- the neutrino -- is less than 0.45 electronvolts -- less than one-millionth the mass of an electron. *Intriguing Martian rocky outcrops discovered on the rim of Jezero Crater NASA’s Mars Perseverance Rover has discovered a cornucopia full of intriguing rocky outcrops on the rim of Jezero Crater. *The Science Report The weather now really does suddenly go from boiling hot to freezing cold more than it used to. A new study claims that lab-grown chicken nuggets could be a reality in the near future. Psychologists are now warning about the potential dangers of having a relationship with your AI chatbot. Alex on Tech: Google loses major court case Series 28 Episode 50 *New evidence overturns theories on the origin of Earth’s water Scientists have uncovered crucial new evidence overturning earlier hypothesis on the origin of Earth’s water. *The strange mystery of the red planet’s Magnetic field A new study suggests strange magnetic signatures detected on the red planet Mars could be due to a partially molten core – only covering its southern hemisphere. *The Lyrids Meteor shower now on full display One of humanity’s oldest known meteor showers the Lyrids now on full display in the night sky. *The Science Report Two common food additives could be linked with an increased risk of type 2 diabetes. Palaeontologists have identified footprints of armoured ankylosaur dinosaurs for the first time. The world’s first whole eye and face transplant. Skeptics guide to health advice on social media. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests includes: Nikku Madhusudhan from Cambridge University Themiya Nanayakkara from Swinburne University Robert Massey, Deputy Executive Director of the Royal Astronomical Society And our Regulars: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌
Supporters Club
21 APR 2025 · Unlocking Stellar Secrets in Messier 67: The Role of Stellar Seismology
In this episode of SpaceTime, we dive into the remarkable findings from the study of the open star cluster Messier 67, where astronomers have employed stellar seismology to unravel the evolutionary history of its stars. Located approximately 2,700 light years away, Messier 67 is a treasure trove of information, containing around 500 stars, including white dwarfs and sun-like stars, all born from the same molecular gas cloud about 4 billion years ago. This unique cluster provides a valuable perspective on stellar evolution and the dynamics of our galaxy.
Stellar Seismology: A New Tool for Understanding Star Ages
Lead author Claudia Reyes from the University of New South Wales explains how the study utilized oscillation frequencies of stars to determine their ages—a challenging task in astronomy. By analyzing how stars vibrate, researchers can infer critical details about their internal structure and evolutionary processes. This innovative method not only enhances our understanding of individual stars but also offers insights into the formation and evolution of galaxies, including our own Milky Way.
Implications for Our Sun's Future
The implications of this research extend to the future of our own Sun. As stars evolve, they undergo significant changes, and understanding these processes in Messier 67 helps scientists predict what will happen as our Sun ages. Reyes discusses the fascinating concept of "starquakes," which are akin to earthquakes but occur within stars, providing further insights into stellar dynamics.
00:00 Space Time Series 28 Episode 48 for broadcast on 20 April 2025
00:49 Overview of Messier 67 and its significance
06:30 Stellar seismology and its role in determining star ages
12:15 Implications for the Sun's future evolution
18:00 Understanding starquakes and their effects
22:45 Future directions for research in galactic archaeology
27:00 Summary of recent astronomical discoveries
30:15 Science report: Advances in exoplanet detection techniques
https://www.spacetimewithstuartgary.com/
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✍️ Episode References
Nature
https://www.nature.com/
Astrophysical Journal
https://iopscience.iop.org/journal/0004-637X
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss
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15 APR 2025 · SpaceTime Series 28 Episode 45, 46 & 47
The Astronomy, Space and Science News Podcast
Exploring the Lunar Far Side's Water Mystery, Asteroid 2024 YR4's New Trajectory, and Stellar Seismology Revealing Galactic Histories
In this episode of SpaceTime, we investigate the intriguing findings from China's Chang'e 6 mission, which reveal that the Moon's far side is significantly drier than its near side. The analysis of lunar rocks suggests a stark contrast in water distribution, with implications for our understanding of the Moon's evolution and the giant impact hypothesis that explains its formation.
Asteroid 2024 YR4's Shift in Focus
Next, we discuss Asteroid 2024 YR4, which initially posed a potential threat to Earth but is now projected to target the Moon. As scientists gather more data, the likelihood of a lunar impact has increased, prompting a closer examination of this unique space rock's properties and origins, as well as its potential consequences for the Moon.
Unveiling Galactic Histories Through Stellar Seismology
Additionally, we delve into the study of Messier 67, an open star cluster where astronomers have employed stellar seismology to trace the evolutionary paths of its stars. This research not only enhances our understanding of the Milky Way's history but also offers insights into the future of our own Sun. We explore how the oscillations of stars can reveal their internal structures and ages, providing a new tool for galactic archaeology.
00:00 Space Time Series 28 Episode 45 for broadcast on 13 April 2025
00:49 Findings from Chang'e 6 on lunar water distribution
06:30 Implications for lunar evolution and geology
12:15 Asteroid 2024 YF4's trajectory changes
18:00 Properties and potential lunar impact of YF4
22:45 Stellar seismology insights from Messier 67
27:00 Summary of recent astronomical discoveries
30:15 Science report: Links between diabetes drugs and dementia risk
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11 APR 2025 · The Astronomy, Space and Science News Podcast
Innovative Techniques in Dark Matter Research: Atomic Clocks and Cavity-Stabilized Lasers
In this episode of SpaceTime, we explore a groundbreaking approach to uncovering the mysteries of dark matter through the innovative use of atomic clocks and cavity-stabilized lasers. Dark matter, which constitutes about 80% of the universe's mass, remains largely elusive, and scientists are still striving to understand its true nature. We discuss insights from Ashlee Caddell of the University of Queensland, who explains how her team's research leverages ultra-stable lasers and atomic clocks to detect subtle changes that could indicate the presence of dark matter acting as a wave.
Understanding Dark Matter Through Oscillations
Caddell elaborates on how the unique properties of dark matter lead to oscillations that could be measured by comparing the ticking rates of separated atomic clocks. This method allows researchers to probe previously invisible forms of dark matter that do not emit light or energy. We examine the implications of these findings for our understanding of the universe and the potential to explore a broader range of dark matter scenarios.
Challenges in Dark Matter Detection
The discussion also touches on the historical context of dark matter research, including the challenges faced in detecting weakly interacting massive particles (WIMPs) and the emergence of alternative theories such as axions. Caddell shares her insights on the creative approaches scientists are taking in the ongoing quest to identify and understand dark matter's role in cosmic structures.
00:00 Space Time Series 28 Episode 44 for broadcast on 11 April 2025
00:49 New techniques for dark matter detection using atomic clocks
06:30 The concept of dark matter acting as a wave
12:15 Historical context and challenges in dark matter research
18:00 Insights into oscillating dark matter fields
22:45 Discussion on alternative dark matter theories
27:00 Summary of the implications for astrophysics
30:15 Science report: Advances in atomic clock technology
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✍️ Episode References
Physical Review Letters
https://journals.aps.org/prl/
University of Queensland
https://www.uq.edu.au/
Nature Reviews Physics
https://www.nature.com/natrevphys/
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9 APR 2025 · SpaceTime S28E42 S28E43 S28E44 w/c April 7, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 42 *Another clue into the antimatter universe Physicists have discovered a fundamental difference in the decay behaviours of a matter particle and its antimatter counterpart. The discrepancy could bring scientists a step closer to understanding how everything in the universe came to be. *A new technique to hunt for dark matter Scientists have developed an innovative new approach to uncover the secrets of dark matter using atomic clocks and cavity-stabilized lasers. Dark matter is a mysterious invisible substance which makes up some 80 percent of all matter in the universe – yet scientists have no idea what it is. *What caused the Spectrum rocket failure? Investigators working to determine the cause of last week’s Spectrum rocket launch failure are looking at the guidance control system. Spectrum was launched from the Andøya Spaceport on Norway’s northern west coast on what should have been the first ever orbital rocket launch from mainland Europe. *The Science Report Southern Ocean warming may have more effect on rainfall and drought in the tropics than the Arctic. Scientists have developed the world’s smallest temporary pacemaker. Miso made in space has a nuttier, more roasted flavour than when it’s made on Earth. Skeptics guide to urine therapy SpaceTime Series 28 Episode 43 *Why does Venus have so many volcanoes? A new study suggests convection in its crust could explain why Venus has so many volcanoes. *ESA shuts down the Gaia spacecraft for good The European Space Agency has finally powered down its Gaia spacecraft after more than a decade spent gathering data on the stars of the Milky Way galaxy. *FRAM 2 launch SpaceX launches the first manned mission to orbit above planet Earth’s poles. *The Science Report Agriculture likely to push antibiotic use on livestock by a further 29 percent over the next 15 years. Warnings that plastic-eating seabirds have failing organs, brain and nerve problems, and cell damage. Teen girls who spend longer on their phones are more likely to have less sleep. Alex on Tech the new Nintendo Switch 2. SpaceTime Series 28 Episode 44 *New insights into the atmosphere of Uranus Astronomers have uncovered new insights into the atmospheric composition and dynamics of the mysterious ice giant Uranus. *The 2025 Space Environment Report on space junk The European Space Agency has released its latest Space Environment report warning of the ever growing problem of space junk orbiting the Earth. *NASA and Boeing prepare for a new round of Starliner testing NASA and Boeing working on new tests and evaluations toward ironing out the ongoing problems with Boeings CST-100 Starliner following a string of disastrous test flight attempts in recent years. *The Science Report Places with higher concentrations of microplastics have higher rates of hypertension, diabetes and stroke. People constantly distracted by their phone will find other ways to procrastinate if the phone isn’t nearby. Scientists have turned a woman's thoughts into speech using a device trained on her brain activity. Skeptics guide to Neurolinguistic programming. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests includes: Ashlee Caddell from the University of Queensland And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌
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31 MAR 2025 · Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 39 *Dating the Moon’s oldest and largest impact crater Scientist have finally put a date on the age of the Moon’s oldest and largest impact crater. The findings reported in the journal National Science Review suggest the giant lunar South Pole–Aitken basin was created by a massive asteroid impact some 4.25 billion years ago. *NASA's PUNCH mission safely in orbit Now safely in orbit, NASA’s Polarimeter to Unify the Corona and Heliosphere or PUNCH constellation is now undergoing a 90-day commissioning period -- undertaking in flight checkouts prior to commencing its two year mission. *Mainland Europe's first orbital rocket launch postponed High winds and bad weather has forced mission managers to scrub what would have been the first ever orbital rocket launch from mainland Europe. *The Science Report Microplastics affecting the ability of plants to carry out photosynthesis. Study says replacing butter with plant-based oils could help protect from cancer or heart disease. Sharks have been recorded actively producing sounds for the first time. Skeptics guide to spirits haunting the London Underground SpaceTime Series 28 Episode 40 *Largest organic molecules found on Mars Scientists analyzing pulverized rock using NASA’s Mars Curiosity rover have discovered the largest organic compounds ever seen on Red Planet -- and could be the remnants of fatty acids. *Parker Solar Probe survives its close encounter with the Sun NASA’s Parker Solar Probe has just survived another close encounter with the Sun swooping to within 6.1 million kilometres of the solar surface. *Earliest days of Earth’s formation may have been very different from what we thought Scientists have found that planet Earth’s lower mantle may have been formed under very different dynamics than what had originally been hypothesised, with evidence of low pressure rather than high pressure crystallisation. *The Science Report Study warns that the amount of dissolved oxygen in the world's lakes has declined profoundly since 2003. The golden key to being healthy in old age. Scientists have developed a way of purifying urban wastewater Alex on Tech: something better than lithium-ion batteries SpaceTime Series 28 Episode 41 *Mysterious red sprite lightning strikes over the Himalayas Scientists have captured rare images of red sprite lightning high above thunderstorms in the Himalayas. *Shocking spherules on Mars NASA’s Mars Perseverance rover has discovered a strange rock composed of hundreds of millimetre-sized spheres. *A new geologic map of the asteroid belt Scientists have put together a new geologic map of the main asteroid belt between Mars and Jupiter. *SkyWatch April The splendors of the Southern Cross and its two pointer stars Alpha and Beta Centauri, the blue Supergiant Canopus and the Lyrids meteor shower are among the highlights of the April night skies on SkyWatch. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: NASA PUNCH mission scientist Nicholeen Viall PUNCH Principal Investigator Graig Deforest South West Research Institute Curiosity Deputy Project Scientist Abigail Fraeman from NASA JPL And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics And science writer Jonathan Nally
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31 MAR 2025 · The Astronomy, Space and Science News Podcast
Unveiling TOI 2818C: A New Exoplanet Discovery, Insights into Hot Jupiters, and the Dynamics of Planetary Systems - Full Unedited Interview
In this Bonus episode of SpaceTime, we delve into the exciting discovery of a potential new exoplanet, TOI 2818C, located over a thousand light years away in the constellation Papus. This intriguing planetary candidate is estimated to be 10 to 16 times the size of Earth and completes its orbit in less than 16 Earth days. We discuss the innovative transit timing variations method that led to this discovery, revealing the presence of this companion planet alongside the hot Jupiter TOI 2818b, and its implications for our understanding of planetary formation in hot Jupiter systems.
Understanding Hot Jupiters
We explore the unique characteristics of hot Jupiters and the rarity of finding companion planets within their systems. As we analyze the dynamics involved when multiple planets influence each other's orbits through gravitational interactions, we uncover the challenges astronomers face in deciphering these complex systems.
Planetary Formation Theories
Additionally, we examine the ongoing debates surrounding the formation of hot Jupiters, including the theories of cold and hot migration. These concepts help explain how these gaseous giants, which were the first exoplanets discovered, can exist so close to their host stars and provide insight into the broader mechanisms of planet formation.
00:00 Space Time Series 28 Episode 39 for broadcast on 30 March 2025
00:49 Discovery of exoplanet TOI 2818C
06:30 Explanation of transit timing variations method
12:15 Insights into the dynamics of hot Jupiter systems
18:00 Theories of planetary formation: cold vs. hot migration
22:45 Challenges in characterizing exoplanets with TESS
27:00 Summary of recent developments in exoplanet research
30:15 Discussion on the implications for our solar system's formation
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✍️ Episode References
Astrophysical Journal
https://iopscience.iop.org/journal/1538-4357
NASA Transiting Exoplanet Survey Satellite (TESS)
https://tess.gsfc.nasa.gov/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
00:00 Discovery of TOI 2818C exoplanet
05:29 Transit timing variations method explained
10:26 The dynamics of hot Jupiter systems
12:02 Theories of planetary formation explored
13:35 Challenges in characterizing exoplanets with TESS
15:13 Implications for our solar system's formation history
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24 MAR 2025 · SpaceTime S28E36 S28E37 S28E38 w/c March 24, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 36 *Space tornadoes discovered around the Milky Way's core Astronomers have discovered enormous space tornadoes swirling through the Milky Way's central core. *Starship to undertake Mars mission next year SpaceX boss Elon Musk says he’s massive interplanetary transport rocket Starship should be ready to undertake its first mission to Mars next year and if successful humans could follow as soon as 2029. *Stranded astronauts finally return home After being stuck in space for nine months the crew of Boeing’s trouble plagued Starliner spacecraft have finally returned to Earth aboard a SpaceX Dragon capsule. *The Science Report Confirmation that 2024 was the first year to be more than 1.5°Celsius above the pre-industrial levels. A new study warns that night owls could be at higher risk of depression. Scientists discover the fossilized remains of a new species of fish that lived 15 million years ago. Skeptics guide to physiognomy SpaceTime Series 28 Episode 37 *New exoplanet candidate discovery Astronomers have located a potential new exoplanet. The new planetary candidate catalogued as TOI-2818C is estimated to be 10-16 times the size of Earth, with an orbital period less than 16 Earth days. *New study claims Dark Energy could evolve over cosmic time New data suggests that the mysterious force known as Dark Energy may be evolving -- changing how it will affect the ultimate fate of the universe. *Claims the Moon’s magnetic field lasted longer than expected New data released by Beijing from its Chang'e-6 sample return mission to the far side of the Moon has shown evidence of what appears to have been a significant resurgence in the Moon's magnetic field some 2.8 billion years ago. *The Science Report Study warns that sugary drinks may increase a women's risk of mouth cancer. A new study claims agricultural drought is likely to become harder to predict as the world heats up. Less than half of claims about ADHD symptoms in popular TikTok videos align with clinical standards. Alex on Tech next generation TVs. SpaceTime Series 28 Episode 38 *A deep new view of the dark Universe The European Space Agency’s Euclid mission has released new data looking at how the Universe’s rate of expansion is accelerating under the mysterious force of Dark Energy. *China to have humans on the Moon by 2030 China says it will land its first taikonauts on the Moon by 2030. Beijing says research and development efforts towards that goal are progressing as scheduled. *NASA launches its EZIE mission to study Earth’s Auroral lights from orbit A new mission by NASA to study the Earth’s spectacular Auroral lights has just launched into orbit. *The Science Report A new study claims married men are three times more likely to be obese compared to bachelors. Scientists discover that the rare Carnaby's cockatoo can live to the ripe old age of 35. Scientists find people with big feet are more likely to also have a more cube-like heel bone. Skeptics guide to astrology in the 6 O clock news https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Ben Montet from the University of Nedw South Wales And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌
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22 MAR 2025 · SpaceTime Series 28 Episode 35 - Bounus Full Unedited Inteview
The Astronomy, Space and Science News Podcast
Unveiling the World's Oldest Meteor Impact Crater, Insights into Earth's Ancient History, and the Role of Impacts in Life's Origins
In this episode of SpaceTime, we delve into the groundbreaking discovery of the world's oldest known meteor impact crater, located in the North Pole Durham region of Western Australia. Dating back an astonishing 3.5 billion years, this ancient structure challenges previous assumptions about Earth's geological history and the origins of life. We discuss the implications of this significant find, as researchers believe it could reshape our understanding of crust formation and the environmental conditions that may have fostered early microbial life.
Shatter Cones and Ancient Impacts
Join us as we explore the evidence provided by shatter cones—distinctive rock formations that form under the immense pressure of a meteor strike. The discovery of these features, alongside the crater's massive size, suggests that such impacts were not only common but also played a crucial role in shaping the early Earth. We examine how these ancient events could have influenced the development of cratons and the mineral wealth found in regions like Western Australia.
Impacts and the Evolution of Life
Additionally, we discuss how these impact events may have created environments conducive to life, such as hot water pools rich in mineral nutrients. The episode highlights the importance of recognising the role of giant impacts in Earth's history and how they may have contributed to the emergence of life as we know it today.
00:00 Space Time Series 28 Episode 35 for broadcast on 21 March 2025
00:49 Discovery of the world's oldest meteor impact crater
06:30 Implications for Earth's geological history
12:15 Overview of shatter cones and their significance
18:00 The role of impacts in crust formation
22:45 Insights into the origins of life on Earth
27:00 Summary of recent geological findings
30:15 Discussion on the importance of recognising ancient impact craters
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✍️ Episode References
Nature Communications
https://www.nature.com/naturecommunications/
Geological Society of Western Australia
https://www.gswa.wa.gov.au/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss.
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17 MAR 2025 · SpaceTime S28E33 S28E34 S28E35 w/c March 17, 2025 Space, Astronomy and Science Podcast. SpaceTime Series 28 Episode 33 *World’s oldest meteor impact crater found in Western Australia Scientists have uncovered the world’s oldest meteor impact crater in Western Australia. Remnants of the ancient three and a half billion year old structure were discovered in the North Pole Dome region of the Pilbara in the state’s north. *More potential locations for ice on Moon A new study suggests that water ice may be present just a few centimetres below the lunar surface over far more areas of the Moon’s polar regions than previously thought. *The super secret X-37B space shuttle returns to Earth following its latest mission The United States Space Force’s highly secretive X-37B space shuttle has returned to Earth following a classified 434 day orbital mission. *The Science Report A once-a-year injection to prevent HIV may be a step closer. Scientists say last year’s record breaking high sea temperatures were not unexpected. Palaeontologists find rare dinosaur footprints hiding in plain sight at a Queensland high school. SpaceTime Series 28 Episode 34 *Could violent supernovae have triggered at least two of Earth’s mass extinction events A new study suggests that nearby exploding stars known as supernovae may have been violent enough to have triggered two of Earth’s known Mass Extinction Events. *NASA launches its latest new stellar mapping mission to study the galaxy NASA has successfully launched its new SPHEREx stellar mapping mission. Sharing the ride was NASA’s PUNCH mission to map the region where the Sun’s outer atmosphere transitions to the solar wind. *128 new moons discovered orbiting Saturn Astronomers have just found an additional 128 moons orbiting the ringed world of Saturn. The new discoveries bring the Saturnian systems total confirmed count to 274. *The Science Report A new study suggests that both starting and quitting drinking booze has effects on cholesterol levels. Crocodiles in Australia’s Top End are eating nine times more now than they did back in the 1970s. A new study warns that by the year 2030 the Australian diet will include even more junk food. Alex on Tech: Palestinian terrorists launch major cyber attacks against X. SpaceTime Series 28 Episode 35 *Discovery of another neighbouring planetary system Astronomers have discovered a nearby planetary system orbiting Barnard’s Star, the second nearest star system to the Sun. *A stable trio of small worlds discovered in the dark outer reaches of the solar system Astronomers have discovered a stable trio of small worlds in the dark outer reaches of the solar system's Kuiper Belt. *Could science fiction’s White Holes be a real thing? A new hypothesis suggests black holes may transition into so called white holes, ejecting matter and potentially even time into the universe. *The Science Report A new study warns that slushie sickness could be a real problem for kids. Scientists have found the earliest reported fossil of a human face in Western Europe. There are growing warnings that butterfly populations are in alarming decline. Skeptics guide to sound healing. https://spacetimewithstuartgary.com https://www.bitesz.com/show/spacetime/ This week’s guests include: Tim Johnson from Curtin University SPHEREX principal investigator Jamie Bock from NASA JPL Caltech SPHEREX Deputy Project Manager Beth Fabinsky NASA JPL SPHEREX Galaxy Formation Lead Asantha Coory UC Uvine SPHEREX Interstellar Ices Lead Gary Melnick Harvard and Smithsonian Centre for Astrophysics Punch Mission Scientist Nicholeen Viall NASA Goddard Punch Principal Investigator Craig Deforest Southwest research institute And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ http://www.bitesz.com/nordvpn . The discount and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌
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.
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