Episódios

  • Celestial Discoveries: The Oldest Comet, Pulsar Insights, and Axiom Space's Successful Splashdown

    Celestial Discoveries: The Oldest Comet, Pulsar Insights, and Axiom Space's Successful Splashdown
    Jul 25 2025
    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
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    23 minutos
  • Earth's Spin Shift: Human Impact, New Worlds Beyond Pluto, and Mars Moon Missions

    Earth's Spin Shift: Human Impact, New Worlds Beyond Pluto, and Mars Moon Missions
    Jul 23 2025
    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.
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    ✍️ 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.
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    23 minutos
  • Cosmic Origins: Cracking the Matter-Antimatter Mystery and Witnessing a New Solar System

    Cosmic Origins: Cracking the Matter-Antimatter Mystery and Witnessing a New Solar System
    Jul 21 2025
    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.
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    ✍️ 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.
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    28 minutos
  • Dark Dwarfs and Lunar Insights: The Youngest Meteorite and New Discoveries in the Carina Nebula

    Dark Dwarfs and Lunar Insights: The Youngest Meteorite and New Discoveries in the Carina Nebula
    Jul 18 2025
    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
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    24 minutos
  • Secrets of the Moon: Unraveling Volcanic Activity and Solar Wind Dynamics

    Secrets of the Moon: Unraveling Volcanic Activity and Solar Wind Dynamics
    Jul 16 2025
    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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    20 minutos
  • Earth's Rapid Spin: The Shortest Day Ever Recorded and the Eris-1 Rocket Launch

    Earth's Rapid Spin: The Shortest Day Ever Recorded and the Eris-1 Rocket Launch
    Jul 14 2025
    Sponsor Details
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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.
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    29 minutos
  • Earth's Ancient Secrets: Unveiling the Oldest Rocks and Mars' Frozen History

    Earth's Ancient Secrets: Unveiling the Oldest Rocks and Mars' Frozen History
    Jul 11 2025
    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.
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    24 minutos
  • Celestial Phenomena: The Largest Oort Cloud Comet and Mars Perseverance's Milestones

    Celestial Phenomena: The Largest Oort Cloud Comet and Mars Perseverance's Milestones
    Jul 9 2025
    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.
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    23 minutos