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.

In this episode of SpaceTime, we explore the latest revelations from the cosmos, featuring the intriguing interstellar comet 3I Atlas, a groundbreaking theory about our place in the universe, and the safe return of SpaceX Crew 10.
The Enigmatic Comet 3I Atlas
Astronomers utilizing NASA's Hubble Space Telescope have captured the sharpest images yet of the interstellar comet 3I Atlas, revealing a solid icy nucleus estimated to measure between 320 meters and 5.6 kilometers in diameter. This comet, traveling at a staggering 209,000 kilometers per hour, is believed to have been journeying through interstellar space for approximately 7 billion years. Observations from multiple telescopes are enhancing our understanding of this ancient visitor, including its size, chemical makeup, and physical properties. With a dust plume and tail reminiscent of solar system comets, 3I Atlas offers a unique glimpse into the history of our galaxy as it approaches the sun.
Earth's Position in a Cosmic Void
A new hypothesis suggests that Earth and the Milky Way may reside in a vast cosmic void rather than along a filament of the universe's cosmic web. This idea could help resolve the Hubble tension, a discrepancy in the rate of the universe's expansion. The study, presented at the Royal Astronomical Society's National Astronomy Conference, posits that our galaxy might be near the center of a local void, influencing the observed expansion rate of the universe. This intriguing concept challenges existing cosmological models and could reshape our understanding of cosmic structure.
Safe Return of SpaceX Crew 10
After five months aboard the International Space Station, SpaceX Crew 10 has safely returned to Earth. Their Dragon capsule splashed down in the North Pacific Ocean, marking the end of a mission that contributed to over 200 scientific experiments, ranging from plant growth studies to the effects of microgravity on human physiology. The crew's successful return paves the way for their replacements, Crew 11, to continue vital research in low Earth orbit.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Royal Astronomical Society
https://ras.ac.uk/
NASA's 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.

In this episode of SpaceTime, we uncover the latest astronomical marvels and pressing concerns in space science.
The Cosmic Horseshoe: A Supermassive Discovery
Astronomers have potentially identified the most massive supermassive black hole ever discovered, dubbed the Cosmic Horseshoe, which is estimated to be around 36 billion times the mass of our Sun. Located approximately 5 billion light years away, this colossal black hole distorts space-time and creates a stunning Einstein ring effect by gravitationally lensing light from distant galaxies. The measurement of its mass combines gravitational lensing and stellar kinematics, providing a rare glimpse into the formation and evolution of galaxies and their central black holes.
Possible New Planet in the Alpha Centauri System
Exciting news emerges from the Alpha Centauri star system, where astronomers may have discovered a new planet orbiting Alpha Centauri A, the closest star system to our own at just 4.25 light years away. Using data from NASA's Webb Space Telescope, researchers suggest this Saturn-sized gas giant could be located in the habitable zone of a sun-like star. While the planet's gaseous nature may not support life, its proximity offers a unique opportunity to study planetary systems beyond our own, challenging existing theories on planet formation in binary star systems.
The Satellite Proliferation Dilemma
As the number of satellites in Earth orbit continues to rise, astronomers are sounding alarms over the interference these satellites cause to vital scientific research. A study has highlighted the impact of Starlink's megaconstellation on radio astronomy, with significant radio emissions masking faint signals from the universe. This growing concern emphasizes the need for regulatory measures to mitigate interference and protect the integrity of astronomical observations.
www.spacetimewithstuartgary.com
✍️ Episode References
Monthly Notices of the Royal Astronomical Society
https://academic.oup.com/mnras
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Astronomy and Astrophysics Journal
https://www.aanda.org/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we journey through the latest advancements in space exploration and cosmology, featuring a groundbreaking radar mission, a new hypothesis on the universe's origins, and updates on the International Space Station.
NISAR: A New Era in Earth Observation
The Indian Space Research Organisation (ISRO) has successfully launched the NISAR satellite, a joint mission with NASA that promises to revolutionise our understanding of Earth's dynamic systems. This advanced synthetic aperture radar satellite will monitor changes in forests, wetlands, and ice-covered surfaces with unprecedented detail, providing crucial data for disaster response, infrastructure management, and climate change studies. With its ability to see through clouds and operate day and night, NISAR will deliver vital insights into the planet's movements and environmental changes every 12 days, enhancing our preparedness for natural hazards.
A New Hypothesis on the Universe's Origins
In a significant shift in cosmological theory, scientists have proposed a new model that explains the universe's early moments without relying on speculative elements. This revolutionary hypothesis, reported in the journal Physical Review Research, suggests that natural quantum fluctuations in a state known as de Sitter space could account for the density differences that led to the formation of galaxies and stars. By eliminating arbitrary parameters, this model offers a clearer understanding of the cosmos and poses fundamental questions about our existence and origins.
Russia's Commitment to the International Space Station
In a surprising announcement, Russia has confirmed its intention to remain a partner in the International Space Station (ISS) project until at least 2028, despite previous threats to withdraw. This decision comes amid ongoing geopolitical tensions and technical challenges within the Russian segment of the ISS. As the global space community continues to evolve, Russia's commitment ensures continued collaboration in low Earth orbit, even as plans for an independent Russian space station progress.
www.spacetimewithstuartgary.com
✍️ Episode References
Physical Review Research
https://journals.aps.org/prresearch/
NASA NISAR Mission
https://www.nasa.gov/nisar
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we delve into the cosmic drama unfolding in our universe, featuring a doomed exoplanet, new revelations about Mars, and the latest crew aboard the International Space Station.
The Death Spiral of TOI 2109b
Astronomers are closely monitoring the death spiral of TOI 2109b, an exoplanet located over 870 light-years away. This gas giant, nearly five times the mass of Jupiter, completes an orbit around its host star in just 16 hours, making it the closest hot Jupiter discovered to date. Researchers from Macquarie University have found that the planet's orbit is decaying, leading to three potential end scenarios: being torn apart by tidal forces, plunging into its host star, or losing its gaseous envelope to intense radiation. These findings provide valuable insights into planetary evolution and the fate of gas giants in close orbits.
New Insights into Mars's Ancient Surface
A recent study has identified a new type of iron sulfate on Mars, suggesting significant geothermal and chemical activity on the planet's surface. Researchers have characterized this uncommon mineral, which may represent a new type due to its unique crystalline structure. The discovery sheds light on how heat, water, and chemical reactions have shaped Mars, and indicates that the planet may have been more geologically active than previously thought. This research enhances our understanding of Mars's potential to have supported life in its past.
New Crew Arrives at the International Space Station
NASA has successfully delivered a new crew to the International Space Station aboard a SpaceX Dragon capsule. The crew, consisting of two Americans, a Russian, and a Japanese astronaut, will replace colleagues who have been aboard since March. As NASA considers extending crew stays from six to eight months to reduce costs, the new team is set to contribute to ongoing research and operations in low Earth orbit.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal
https://iopscience.iop.org/journal/1538-4357
Nature Journal
https://www.nature.com/nature/
NASA's International Space Station
https://www.nasa.gov/mission_pages/station/main/index.html
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
00:00 This is space Time Series 28, Episode 97 for broadcast on 13 August 2025
00:42 Astronomers are tracking the death spiral of a doomed planet more than 870 light years away
12:06 ToI 2109 is one of the most interesting systems that we've got
17:06 Scientists have identified a new type of iron sulfate on the Red Planet
23:47 NASA has delivered four new crew members to the International Space Station aboard SpaceX Dragon
25:10 New study claims consuming three fries a week increases risk of developing type 2 diabetes
26:13 Google about to offer AI study tools to college students for free
29:53 You've got to check for updates on all your Apple devices

In this episode of SpaceTime, we explore groundbreaking discoveries and ambitious plans in the realm of space exploration.
The Most Distant Black Hole: Casper's Lidz 9
Astronomers have identified the most distant black hole ever observed, known as Casper's Lidz 9, dating back 13.3 billion years to a time when the universe was only half a billion years old. This supermassive black hole, weighing in at approximately 300 million solar masses, raises intriguing questions about its rapid growth in the early universe. The findings, published in the Astrophysical Journal, provide a unique opportunity to study the structure and evolution of galaxies during this enigmatic period, with implications for our understanding of black hole formation.
New Insights into Ancient Martian Water
Recent research suggests that Mars was even wetter than previously believed. A study presented at the Royal Astronomical Society's national meeting examined over 1500 kilometres of ancient riverbeds in the Nochesterra region, indicating that flowing water was widespread during the Noche and Hesperian transition around 3.7 billion years ago. These findings challenge existing theories about Mars's dry history and suggest a more complex and active planet, potentially providing a more hospitable environment for ancient life.
Nuclear Reactors for Moon and Mars Bases
The United States has unveiled plans to develop nuclear reactors to power future bases on the Moon and Mars, with the first plant expected to launch by the end of the decade. This initiative aims to support sustained human presence on these celestial bodies, addressing energy needs that solar power cannot fulfil. The reactors will provide essential electricity for life support, scientific equipment, and resource utilisation, marking a significant step in the ongoing space race.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal
https://iopscience.iop.org/journal/1538-4357
NASA's Artemis Program
https://www.nasa.gov/specials/artemis/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we uncover intriguing discoveries about Mars, the cosmos, and the latest advancements in space technology.
Martian Glaciers: Pure Water Ice
Recent research reveals that Martian glaciers are composed of over 80% pure water ice, challenging previous assumptions that they were primarily rocky. This groundbreaking study, led by Yuval Steinberg from the Weizmann Institute, utilized standardized measurements to analyze the dielectric properties of these glaciers, providing a clearer understanding of their composition. The findings not only enhance our knowledge of Martian geology but also have significant implications for future manned missions, as these glaciers could serve as vital water sources for astronauts.
Discovery of an Intermediate Mass Black Hole
NASA's Hubble Space Telescope and Chandra X-Ray Observatory have identified a rare intermediate mass black hole, known as NGC6099HLX1, actively consuming a star. This black hole, located approximately 450 million light-years away, resides in a compact star cluster and exhibits extreme luminosity during its tidal disruption event. The discovery sheds light on the formation of black holes and their role in galactic evolution, providing crucial insights into the elusive intermediate mass category that bridges stellar and supermassive black holes.
United States Space Force's X37B Mission
The United States Space Force is gearing up for the eighth mission of its Boeing X37B space shuttle, set to launch from Cape Canaveral Space Force Base. This mission will test advanced technologies, including a high-bandwidth inter-satellite laser communications system and a cutting-edge quantum inertial sensor. The X37B's unique capabilities allow it to conduct classified operations while remaining difficult to track, highlighting its significance in modern space operations.
www.spacetimewithstuartgary.com
✍️ Episode References
Icarus Journal
https://www.journals.elsevier.com/icarus
Astrophysical Journal
https://iopscience.iop.org/journal/1538-4357
NASA Hubble Space Telescope
https://hubblesite.org/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we explore exciting new findings about our galaxy, the latest achievements of NASA's Mars Curiosity rover, and groundbreaking images of the Sun captured by the Parker Solar Probe.
Milky Way's Hidden Satellites
Recent research suggests that the Milky Way may host up to 100 previously undetected satellite galaxies. Using advanced supercomputer simulations and mathematical modeling, astronomers have identified the existence of these faint dwarf galaxies, which could provide crucial support for the Lambda cold dark matter model. Currently, only 60 companion galaxies are confirmed, but with new telescopes like the Vera Rubin Observatory, the search for these elusive satellites is set to expand, potentially reshaping our understanding of the universe's structure.
Curiosity Rover Reaches New Heights
NASA's Mars Curiosity rover has made significant progress in its exploration of Mount Sharp, revealing intricate geological formations known as boxwork. This unique terrain, shaped by ancient groundwater processes, offers valuable insights into the Red Planet's history. Curiosity has been utilizing its advanced instruments to analyze the composition of the Martian surface and conduct atmospheric observations, marking a new phase in its mission to uncover the secrets of Mars.
Parker Solar Probe's Record-Breaking Images
In a groundbreaking achievement, NASA's Parker Solar Probe has captured the closest images of the Sun ever taken. These stunning observations, made during a recent pass through the solar corona, are helping scientists understand solar phenomena and their impact on space weather. The high-resolution images reveal important details about the solar wind and coronal mass ejections, providing insights that could improve predictions of solar activity and protect technology on Earth.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature Astronomy
https://www.nature.com/natureastronomy/
NASA Mars Curiosity Mission
https://mars.nasa.gov/msl/
Parker Solar Probe
https://www.nasa.gov/content/parker-solar-probe
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
00:00 New study says Milky Way could have far more satellite galaxies than previously thought
00:47 Our Milky Way galaxy could have more satellite galaxies surrounding it than previously predicted
05:37 NASA's Mars Curiosity rover reaches new heights exploring boxwork terrain on Mount Sharp
09:08 NASA's Parker Solar Probe captured stunning new images of the solar atmosphere
18:40 A new study warns that hail storms could hit Australian cities harder due to climate change

In this episode of SpaceTime, we delve into significant developments in space exploration, from Australia's latest rocket launch attempt to groundbreaking theories about the origins of life.
Australia's ERIS 1 Rocket Launch: A Learning Experience
In a dramatic turn of events, Gilmour Space's ERIS 1 rocket experienced a failure just seconds after liftoff, marking Australia's first orbital rocket launch in years. Despite the setback, CEO Adam Gilmour emphasizes the lessons learned from the test flight, which will inform the design and operation of future launches. The rocket's ascent was initially promising, but engine failures led to a crash shortly after clearing the launch tower. Fortunately, no injuries or environmental damage occurred, and the mission provided valuable data that will enhance the next attempt.
Life's Origins: A Cosmic Perspective
A new study suggests that the building blocks of life may have originated in outer space rather than on Earth. Using the ALMA radio telescope, astronomers detected complex organic molecules in the protoplanetary disk of the protostar UH V883 Orionis. These findings indicate that essential compounds, such as ethylene glycol and glycolonitrile, are not only present in various cosmic environments but may also be the precursors to amino acids and other vital biological components. This research supports the notion that the seeds of life are widespread throughout the universe.
Boeing's Starliner Delays Continue
Boeing's Starliner spacecraft faces further delays, now pushed back to at least 2026 before it can carry humans into space. Ongoing technical issues have plagued the project, including helium leaks and thruster control problems. NASA is working closely with Boeing to address these challenges, but the timeline for crewed missions remains uncertain as SpaceX continues to lead in transporting astronauts to the International Space Station.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/1538-4357
NASA's Commercial Crew Program
https://www.nasa.gov/exploration/commercial/crew/index.html
Gilmour Space
https://gilmourspace.com/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
00:00 A new study says the evolution of life may well have origins in outer space
00:47 Gilmour Space's Ares 1 orbital rocket crashed two seconds after launch
10:37 A new study says the evolution of life may have origins in outer space
11:28 Astronomers find 17 complex organic molecules in distant planet forming disk
19:35 New study finds images can shape public opinion regardless of true facts
22:06 World Meteorological Organization says megaflash stretched 829km in 2017

In this episode of SpaceTime, we embark on a thrilling journey through the cosmos, exploring the potential for life on Mars, a remarkable discovery in the outer solar system, and the crucial mapping of sulfur throughout our galaxy.
Searching for Life on Mars
A new study reveals that thick layers of clay on Mars could indicate stable environments conducive to life billions of years ago. Researchers have identified that these clay deposits likely formed in standing bodies of water, providing the right conditions for chemical weathering and potentially supporting ancient life. The findings suggest that the balance between water and carbon cycles on Mars may explain the planet's geological history and the absence of carbonate rocks. Lead author Rhianna Moore discusses how these stable terrains could have fostered habitable conditions for extended periods, offering insights into the Red Planet's wet past.
Discovery of 2020 VN40: A Distant Cosmic Companion
Astronomers have discovered a rare celestial body, 2020 VN40, located far beyond Neptune, moving in perfect synchronicity with the ice giant. This trans-Neptunian object orbits the sun once for every ten orbits Neptune completes, providing new insights into the dynamics of the outer solar system. The discovery, reported in the Planetary Science journal, enhances our understanding of how distant objects interact with Neptune's gravity and offers clues about the solar system's evolution.
Mapping Sulfur in the Milky Way
A groundbreaking study has mapped the distribution of sulfur across the Milky Way, an essential element for life. Utilizing the CRISM X-Ray Imaging and Spectroscopy mission, scientists have directly measured sulfur in both its gaseous and solid forms within the interstellar medium. The findings shed light on sulfur's role in the cosmos and its potential implications for understanding life's distribution throughout the galaxy. This research marks a significant step in answering fundamental questions about the building blocks of life in the universe.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature Astronomy
https://www.nature.com/natureastronomy/
Planetary Science Journal
https://iopscience.iop.org/journal/2632-3338
CRISM Mission
https://www.nasa.gov/mission_pages/asteroids/overview/crism.html
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we uncover groundbreaking revelations about dark energy, lunar geology, and Europe's innovative space weather monitoring initiative.
Dark Energy: A Changing Force?
Astronomers have compiled the largest supernova dataset to date, revealing tantalizing hints that dark energy may not be a constant force in the universe. This research, led by the International Supernova Cosmology Project, analyzes over 2,000 Type 1A supernovae to explore the evolving nature of dark energy, which currently comprises nearly 70% of the universe's mass-energy content. The findings suggest that if dark energy is weakening, it could significantly impact the universe's expansion and ultimate fate, challenging existing models and sparking excitement in the astrophysics community.
New Insights into Lunar Magma
A recent study analyzing samples from China's Chang' e 5 mission indicates that molten magma may have persisted on the Moon's surface much longer than previously believed. Researchers, led by Stephen Alado, utilized radioactive dating to reveal that volcanic activity on the lunar far side could have continued for billions of years, contradicting earlier theories about the Moon's cooling process. This new understanding of lunar geology offers valuable insights into the Moon's evolution and the processes that shape celestial bodies.
Europe's Space Weather Early Warning System
The European Space Agency is set to launch Vigil, a pioneering space weather probe, in 2031. Positioned at the Lagrangian L5 point, Vigil will provide unprecedented monitoring of solar activity, allowing for early warnings of solar storms that could disrupt communication systems and power grids on Earth. This mission aims to enhance our ability to predict and mitigate the impacts of space weather on modern infrastructure, marking a significant advancement in global space safety efforts.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal
https://iopscience.iop.org/journal/1538-4357
Science Advances
https://www.science.org/journal/sciadv
ESA Vigil Mission
https://www.esa.int/Applications/Observing_the_Earth/Space_Weather/Vigil
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we dive into the depths of cosmic mysteries and groundbreaking discoveries, including the enigmatic Long Period Transient and the stellar companion of Betelgeuse, alongside exciting findings from Mars.
Unraveling the Long Period Transient
Astronomers have uncovered a new cosmic phenomenon, ASCAP J1832-0911, which emits both radio and X-ray pulses every 44 minutes for just two minutes at a time. This first-ever detection of a Long Period Transient has left scientists puzzled about its nature and origins. Lead author Dr Andy Wang from Curtin University discusses the potential theories, including the possibility of a magnetar or a binary star system, while emphasizing the need for further observations to unravel this cosmic mystery.
Betelgeuse's Stellar Companion
In a remarkable discovery, astronomers have identified a stellar companion orbiting the red supergiant Betelgeuse. This pre-main sequence star, approximately one and a half times the mass of the Sun, resides within Betelgeuse's outer atmosphere. As Betelgeuse approaches the end of its life, this companion is also on a collision course with destiny, likely spiraling into Betelgeuse within the next 10,000 years. This finding could shed light on the periodic brightness changes observed in similar red supergiant stars.
Mars Perseverance Rover's New Discoveries
NASA's Perseverance Rover continues its exploration of Jezero Crater, uncovering unusual rock formations that may reveal significant geological history. The rover is investigating an intriguing contact area where clay-bearing units meet olivine-rich rocks, potentially preserving evidence of ancient intrusive processes. Despite challenges in studying these formations, mission managers remain determined to unlock the secrets they hold about Mars' past.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/1538-4357
NASA's Perseverance Rover Mission
https://mars.nasa.gov/mars2020/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
00:00 Space Time series 28 episode 90 for broadcast on 28 July 2025
00:47 Long Period Transient emitting radio and X ray pulses every 44 minutes
07:48 Astronomers have discovered what appears to be a companion star in binary orbit
12:30 NASA's Mars Perseverance Rover is continuing its exploration of Jetro Crater
15:00 New study links early smartphone use to poorer mental health later in life
17:39 There are new reports of Bigfoot activity in the Pacific Northwest state of Washington

In this episode of SpaceTime, we explore the latest cosmic revelations, including the astonishing discovery of an ancient interstellar comet, the intricate workings of a rare pulsar, and the safe return of the Axiom 4 crew from their mission.
Ancient Interstellar Comet 3I/Atlas
Astronomers have unveiled that the newly discovered interstellar object, 3I/Atlas, could be the oldest comet ever observed, potentially predating our solar system by over 3 billion years. This water-rich visitor, detected by NASA's ATLAS survey, is only the third known object from beyond our solar system to reach us. A study by Matthew Hopkins from Oxford University suggests that 3I/Atlas may be more than 7 billion years old, offering a glimpse into a part of the Milky Way previously unseen. As it approaches the sun, its activity is expected to increase, revealing more about its composition and the role ancient comets play in star and planetary formation.
Unraveling the Mysteries of a Rare Pulsar
In another exciting development, astronomers have made significant strides in understanding a unique pulsar system, PSRJ 1023 0038. This transitional millisecond pulsar, which interacts with a lower mass stellar companion, has been studied using data from NASA's Imaging X-Ray Polarimetry Explorer (IXPE). The findings suggest that the X-ray emissions originate from the pulsar wind rather than the accretion disk, challenging existing models and providing new insights into neutron star behavior and particle acceleration.
Axiom Space AX4 Crew Returns
The Axiom Space AX4 crew has successfully splashed down in the North Pacific Ocean after nearly three weeks aboard the International Space Station. This mission, part of NASA's efforts to promote commercial activities in space, included a diverse crew and numerous scientific experiments. With the return of the AX4 crew, preparations are underway for NASA's upcoming Crew 11 mission, further expanding humanity's presence in low Earth orbit.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/1538-4357
Journal of the American Medical Association
https://jamanetwork.com/journals/jama
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
00:00 New interstellar object 3I/Atlas may be older than our solar system
06:44 Foreign astronomers have discovered new evidence Explaining how pulsing remnants interact in space
14:09 Private company Axiom Space's AX4 crew return safely to Earth
16:06 Having a higher body mass index from early childhood and adolescence is linked to aging
17:32 New study looked at which over the counter medicines are good at treating depression
18:43 Brazilian psychic issues chilling warning about dangers posed by artificial intelligence

This episode of SpaceTime is brought to you with the support of Incognai - when your online privacy matters, Incogni's the service you need. Check out our special discount deal by visiting www.incogni.com/stuartgary
In this episode of SpaceTime, we delve into groundbreaking discoveries that reveal the impact of human activity on Earth, explore a new celestial body beyond Pluto, and prepare for Japan's upcoming Martian moon mission.
Human Development and Earth's Polar Shift
A recent study published in Geophysical Research Letters has confirmed that human development has caused a significant shift in Earth's spin axis. By constructing nearly 7,000 dams between 1835 and 2011, humans have redistributed the planet's mass, resulting in a total pole shift of about 1.13 meters. Lead author Natasha Valencic explains how this shift not only affects Earth's rotation but also contributes to a global drop in sea levels. The findings underscore the importance of considering water impoundment in future sea level rise calculations.
Discovery of a World Beyond Pluto
Astronomers have identified a small celestial object, designated 2023 KQ14, located beyond Pluto, potentially challenging the existence of the elusive Planet Nine. This discovery, detailed in Nature Astronomy, suggests that the outer solar system is more diverse than previously thought. With a stable orbit for over 4.5 billion years, 2023 KQ14's peculiar trajectory raises questions about the formation and evolution of distant solar system bodies, as well as the dynamics of gravitational influences in this remote region.
Japan's Martian Moon Sample Return Mission
Japan's aerospace exploration agency JAXA is set to launch the Martian Moons Exploration Mission (MMX) in 2026. This ambitious mission aims to land on Phobos, collect samples, and return them to Earth by 2031. The spacecraft will also conduct a flyby of Deimos while gathering crucial data to determine the origins of Mars' moons. With advanced scientific instruments onboard, the mission seeks to unravel the mysteries surrounding these small, potato-shaped moons and their relationship to the Red Planet's history.
www.spacetimewithstuartgary.com
✍️ Episode References
Geophysical Research Letters
https://agupubs.onlinelibrary.wiley.com/journal/19448007
Nature Astronomy
https://www.nature.com/natureastronomy/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we tackle some of the most profound questions in science, including the mystery of why the universe exists, the potential for liquid water on Mars, and the birth of a new solar system.
Unraveling the Mystery of the Universe
Scientists have made significant strides in understanding the fundamental differences between matter and antimatter, a question that has puzzled humanity since the dawn of physics. The LHCB collaboration at CERN has provided compelling evidence of a mirror-like asymmetry in how baryons behave compared to their antimatter counterparts. This breakthrough could shed light on why our universe is predominantly composed of matter, despite the equal creation of matter and antimatter during the Big Bang. We delve into the implications of this discovery and its potential to unlock the secrets of the universe's existence.
Liquid Water on Mars: A New Possibility
A groundbreaking study suggests that liquid brines may form on the Martian surface, challenging the long-held belief that Mars is devoid of liquid water. Lead researcher Vincent Chevrea from the University of Arkansas discusses how meteorological data and advanced computer modeling indicate that brines could develop during specific seasonal windows. This finding opens new avenues for the search for life on Mars and highlights the importance of targeting these periods for future exploration.
Witnessing the Dawn of a New Solar System
Astronomers have made an unprecedented observation of a new solar system forming around the protostar HOPS 315, located 1300 light-years away. Using the Atacama Large Millimeter/Submillimeter Array (ALMA), researchers have identified the very first specks of planet-forming material, marking a significant milestone in our understanding of solar system formation. This discovery not only provides insight into the processes that shaped our own solar system 4.6 billion years ago but also offers a unique opportunity to study planetary formation in real-time.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature Journal
https://www.nature.com/nature
Journal of Communications Earth and Environment
https://www.nature.com/commsenv
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we explore the latest discoveries in lunar geology, the intriguing concept of dark dwarves, and the stunning features of the Carina Nebula.
The Youngest Basaltic Lunar Meteorite
Scientists have uncovered a 2.35 billion-year-old lunar meteorite, Northwest Africa 16286, which fills a significant gap in our understanding of the Moon's volcanic history. This meteorite, distinct in its chemical profile, suggests that volcanic activity on the Moon persisted longer than previously thought, unveiling new insights into its internal heat generation processes. Lead author Joshua Snape from the University of Manchester explains how this rare sample enhances our knowledge of lunar geology without the costs associated with space missions.
Hypothetical Dark Dwarfs and Dark Matter
A new study proposes the existence of hypothetical objects called dark dwarves, which could help unravel the mystery of dark matter—an invisible substance that constitutes approximately 80% of the universe's mass. Researchers suggest that these low-mass objects could interact with dark matter in ways that produce observable effects, providing a potential pathway to understand this elusive component of the cosmos. The study highlights the importance of identifying markers, such as lithium-7, to confirm the existence of dark dwarfs and advance our understanding of dark matter.
Adaptive Optics and the Carina Nebula
Using adaptive optics, astronomers have achieved unprecedented clarity in imaging the western wall of the Carina Nebula, revealing intricate structures previously hidden by dust and gas. This breakthrough allows for a deeper investigation into star formation processes in this massive stellar nursery. The enhanced images showcase how massive young stars influence their surroundings and contribute to the cycle of stellar life, offering a glimpse into the conditions that may have shaped our own solar system.
www.spacetimewithstuartgary.com
✍️ Episode References
Journal of Cosmology and Astroparticle Physics
https://www.journalofcosmology.com/
Nature Journal
https://www.nature.com/nature
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.
00:00 00:49 04:51 09:17 15:16 17:08

In this episode of SpaceTime, we unlock the secrets of the Moon's far side, explore the Sun's helicity barrier, and discuss the European Space Agency's advancements in orbital launch vehicles.
Extended Volcanism on the Moon's Far Side
Recent findings reveal that the Moon's far side has experienced extended volcanism for at least 1.4 billion years, with two significant volcanic phases occurring around 4.2 and 2.8 billion years ago. This research, stemming from samples collected by China's Chang' E6 mission, provides insights into the Moon's geological history and the asymmetry between its near and far sides. The study highlights the role of colossal impacts in shaping the Moon's interior and suggests uneven distribution of volatile elements.
Discovery of the Sun's Helicity Barrier
A groundbreaking study has identified a region of the Sun known as the helicity barrier, which plays a crucial role in heating and accelerating the solar wind. Observations from NASA's Parker Solar Probe have confirmed the existence of this barrier, providing insights into the mechanisms of turbulent dissipation and coronal heating. This discovery helps explain temperature anomalies in the solar atmosphere and enhances our understanding of space weather events that impact Earth.
European Space Agency's Launch Vehicle Developments
The European Space Agency has narrowed its list of potential candidates for future orbital launch vehicles. The selected companies will receive funding to develop their systems, aiming to increase competition and choice in European launch services. This initiative mirrors efforts by NASA in the U.S. to foster a diverse range of commercial launch providers, enhancing capabilities for future space missions.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature Journal
https://www.nature.com/nature
Physical Review
https://journals.aps.org/pr/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

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In this episode of SpaceTime, we explore some fascinating recent developments in our understanding of Earth and beyond.
Earth Experiences Its Shortest Day
On July 9, Earth recorded one of its shortest days, with a rotation 1.51 milliseconds shorter than the average. We discuss how various factors, including gravitational influences from the Moon and Sun, tectonic movements, and even human activities, affect Earth's rotation. This episode also highlights the implications of these changes on our timekeeping systems and the necessity of leap seconds to maintain accuracy in clocks and navigation systems.
Gilmour Space's Ares 1 Rocket Launch Preparations
Gilmour Space is gearing up for the maiden test flight of its Ares 1 orbital rocket after previous launch attempts were postponed due to technical glitches and weather conditions. We delve into the rocket's design, which includes a unique hybrid propulsion system, and discuss the significance of this launch as Australia’s first all-Australian designed and built launch vehicle since the 1970s.
Revising Earth's Geological Timeline
A groundbreaking study suggests that Earth's first solid crust formed from a magma ocean around 4.5 billion years ago, shortly after a massive impact event that created the Moon. This research challenges long-held beliefs about the formation of continents and the onset of plate tectonics, indicating that the chemical signatures of continental crust may have originated much earlier than previously thought. We explore the implications of this study for our understanding of Earth's early geological history and the evolution of life.
www.spacetimewithstuartgary.com
✍️ Episode References
Nature Journal
https://www.nature.com/nature
NASA
https://www.nasa.gov/
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

This episode of SpaceTime is brought to you by NordVPN....our official VPN partner. To get your special SpaceTime listener offer, simply visit www.nordvpn.com/stuartgary. You'll be glad you did...and remember, our special offer comes with a 30 day  money back guarantee...so there's nothing to lose. 
In this episode of SpaceTime, we delve into groundbreaking research that sheds light on Earth's ancient history, the formation of hot Jupiters, and the enigmatic climate of Mars.
Earth's Oldest Rocks Confirmed in Northern Canada
A recent study published in the journal Science confirms that the oldest rocks on Earth are located in northern Quebec, Canada, dating back 4.16 billion years. Lead author Jonathan Nally. from the University of Ottawa explains how this discovery provides a unique window into the Hadean Eon, offering insights into the early Earth's environment and the formation of its first continents. While the Jack Hills Range in Australia holds the oldest material of terrestrial origin, these Canadian rocks are pivotal in understanding Earth's formative years.
New Insights into Hot Jupiter Formation
We explore the intriguing case of CI Tau B, a hot Jupiter that orbits a young star just 450 light-years away. Researchers from Rice University and Lowell Observatory have utilized advanced spectroscopic techniques to analyze the planet's mass and brightness, revealing that it formed through a hot start mechanism rather than traditional models. This study provides a critical benchmark for understanding how giant planets can form rapidly in close proximity to their stars, challenging long-held assumptions in planetary science.
Was Mars Always Doomed to be a Desert?
A new hypothesis from the University of Chicago suggests that Mars was never meant to remain a warm, habitable planet. The study indicates that the planet's past liquid water periods were likely short-lived, driven by the Sun's gradual brightening. Unlike Earth, which has maintained its habitability, Mars appears to self-regulate towards desert conditions, raising questions about the mechanisms that have led to its current frozen state. The findings, published in Nature, build on previous discoveries by NASA's Curiosity rover and could reshape our understanding of Martian climate history.
www.spacetimewithstuartgary.com
✍️ Episode References
Science Journal
https://www.sciencemag.org/
Astrophysical Journal Letters
https://iopscience.iop.org/journal/1538-4357
Nature Journal
https://www.nature.com/nature
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.

In this episode of SpaceTime, we explore some of the most exciting recent discoveries in astronomy, including the largest Oort Cloud comet ever observed and remarkable achievements from NASA's Mars Perseverance Rover.
Comet C/2014 UN271 Bernardinelli-Bernstein: A Giant from the Oort Cloud
Astronomers have made a groundbreaking discovery by detecting molecular activity in Comet C/2014 UN271 Bernardinelli-Bernstein, the largest and most distant active comet ever observed. Originating from the Oort Cloud, this colossal comet measures nearly 140 km across, revealing complex jets of carbon monoxide gas and providing insight into its behavior far from the Sun. Observations from the Atacama Large Millimeter/Submillimeter Array (ALMA) in Chile have confirmed its status as the largest known Oort Cloud comet, offering a rare glimpse into the chemistry and dynamics of these distant celestial objects.
Nasa's Perseverance Rover Sets New Distance Record
NASA's Mars Perseverance Rover has achieved a new milestone, traveling 411 meters in a single autonomous drive while exploring the Jezero Crater. This episode highlights the rover's innovative AUTONAV self-driving system and its 30th Abrasion Study of a Martian rock named Kenmore. The findings reveal significant mineral compositions, including clay minerals, iron, and magnesium, enhancing our understanding of Mars' geological history and potential past habitability.
Exoplanets Triggering Stellar Flares
Astronomers have discovered that certain exoplanets in close orbits around their host stars can trigger powerful stellar flares, leading to atmospheric erosion over time. This groundbreaking finding, reported in the journal Nature, demonstrates the interaction between planets and their stars in a way never before observed. The study, conducted using the European Space Agency's CHEOPS spacecraft, reveals that these energetic flares can significantly impact the evolution of the orbiting planets, providing new insights into the dynamics of stellar systems.
www.spacetimewithstuartgary.com
✍️ Episode References
Astrophysical Journal Letters
https://iopscience.iop.org/journal/1538-4357
NASA Perseverance Rover
https://mars.nasa.gov/mars2020/
Nature Journal
https://www.nature.com/nature
Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.