Stellar Encounters: A Second Collision of Galaxy Giants
Sponsor Details:This epiosode is broght to you by NordVPN...the official VPN service of SpaceTime. Get online security at a special SpaceTime price. Details at www.nordvpn.com/stuartgaryor use the code STUARTGARY at checkout.In this episode of SpaceTime, we explore groundbreaking discoveries and significant events unfolding in our universe.Galactic Collision Course: Two Massive Galaxy Clusters Set for Round TwoAstronomers have observed a rare cosmic event as two massive galaxy clusters, previously collided, are now on a trajectory for another encounter. Located 2.8 billion light-years away, the clusters—designated PSE2G 181.06.48.47—exhibit fascinating structures and shock fronts indicative of their impending collision. We delve into the implications of this rare event and what it reveals about the dynamics of galaxy clusters and dark matter.NASA's Psyche Mission Switches to Backup SystemsNASA has been compelled to switch to a backup fuel system on its Psyche spacecraft after a drop in fuel pressure was detected in the main propulsion system. We discuss the technical challenges faced by the mission team, the significance of the asteroid Psyche, and what this means for the spacecraft's journey to explore this intriguing metallic asteroid, scheduled for arrival in 2029.Discovery of a New Atomic NucleusFor the first time in over three decades, scientists have measured the heaviest nucleus decaying through proton emission. This discovery, involving the lightest known isotope of astatine-188, sheds light on the rare form of radioactive decay and the intricate properties of exotic nuclei. We explore the experimental techniques used and the theoretical implications of this groundbreaking finding.www.spacetimewithstuartgary.com✍️ Episode ReferencesAstrophysical Journalhttps://iopscience.iop.org/journal/0004-637XNASA Psyche Missionhttps://www.nasa.gov/psycheBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.00:00 This is Space Time Series 28, Episode 71 for broadcast on 13 June 202501:00 Galactic collision course: Two massive galaxy clusters set for round two12:15 NASA's Psyche mission switches to backup systems22:30 Discovery of a new atomic nucleus30:00 Science report: Unprecedented ocean warming in the South Pacific
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Stellar Catastrophes: The Most Powerful Explosions Since the Big Bang
In this episode of SpaceTime, we delve into the cosmos to uncover extraordinary cosmic phenomena, groundbreaking Mars exploration, and innovative asteroid detection technology.The Most Powerful Cosmic Explosions Since the Big BangAstronomers have identified a new class of cosmic events known as extreme nuclear transients (ENTs), which are the most powerful explosions observed since the Big Bang. These events occur when supermassive black holes tear apart stars over three times the mass of our sun, releasing energy that surpasses even the brightest supernovae. We explore the implications of these findings, including how these luminous phenomena can provide insights into black hole growth and the early universe.NASA's Perseverance Rover Takes a Bite of Ancient Martian RockNASA's Perseverance Rover has sampled a potentially ancient rock on Mars known as Crocodilen, located on the Jezero Crater Rim. This area offers vital clues about the planet's watery past and the potential for past life. We discuss the rover's mission, its new sampling strategy, and the significance of the clay minerals found in the region, which could preserve organic compounds.First Light for Europe's New Killer Asteroid HunterThe European Space Agency's FlyEye telescope has achieved its first light, marking a new era in the search for near-Earth asteroids that could threaten our planet. Designed to capture a vast region of the sky simultaneously, FlyEye will operate autonomously to detect and track these celestial hazards. We delve into how this innovative technology will enhance our planetary defense efforts and the role it will play in monitoring potential threats.www.spacetimewithstuartgary.com✍️ Episode ReferencesScience Advanceshttps://www.science.org/journal/sciadvNaturehttps://www.nature.com/nature/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 70 for broadcast on 11 June 202501:00 The most powerful cosmic explosions since the Big Bang12:15 NASA's Perseverance Rover takes a bite of ancient Martian rock22:30 First light for Europe's new killer asteroid hunter30:00 Science report: Global drought severity increases since 1981
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Galactic Collision Uncertainty: New Insights on the Milky Way and Andromeda
Sponsor Details:This episode is brought to you with the support of NordVPN - SpaceTimes official VPN service. When it comes to your online privacy, use the one we use and help support the show. To claim your special SpaceTime bonus deal, visit nordvpn.com/stuartgary or use the coupon code STUARTGARY at checkout.In this episode of SpaceTime, we delve into groundbreaking revelations that challenge our understanding of cosmic events and planetary formation.New Insights on the Milky Way and Andromeda CollisionRecent studies utilizing data from NASA's Hubble Space Telescope and the European Space Agency's Gaia spacecraft cast doubt on the long-anticipated collision between our Milky Way and the Andromeda Galaxy. New simulations indicate only a 2% probability of a merger occurring within the next 3.7 to 5 billion years, suggesting that both galaxies may continue to evolve largely unperturbed for a much longer period. We explore the implications of these findings and the variables that have altered previous predictions about our galactic future.Understanding Seismic Wave Acceleration in Earth's D LayerA fascinating new study sheds light on the behavior of seismic waves deep within the Earth. Researchers have discovered that the unique crystal structure of minerals in the D layer, located near the core-mantle boundary, influences the acceleration of seismic waves. This breakthrough not only clarifies the mystery behind seismic wave behavior but also provides insights into the dynamics at play in the Earth's depths.Discovery of Embryonic Exoplanets Using Advanced TechniquesAstronomers have unveiled a new technique that has successfully identified five new embryonic exoplanets, offering a glimpse into their early formation stages. Utilizing the ALMA radio telescope, researchers can peer through dense protoplanetary disks to detect these young planets, which are forming rapidly in dynamic environments. This revolutionary method opens new avenues for understanding planetary evolution and the processes that govern the birth of new worlds.www.spacetimewithstuartgary.com✍️ Episode ReferencesNature Astronomyhttps://www.nature.com/natureastronomy/Communications Earth and Environmenthttps://www.nature.com/commsenv/Astrophysical Journal Lettershttps://iopscience.iop.org/journal/0004-637XBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.00:00 This is Space Time Series 28, Episode 69 for broadcast on 9 June 202501:00 New insights on the Milky Way and Andromeda collision12:15 Understanding seismic wave acceleration in Earth's D layer22:30 Discovery of embryonic exoplanets using advanced techniques30:00 Science report: AI systems refusing to turn off
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MOND vs. Dark Matter: A New Perspective on Cosmic Mysteries
Sponsor Details:This episode is brought to you with the support of Insta360 - the leaders in 360-degree video technology. To explore their innovative range and claim your special SpaceTime bonus, visit store.insta360.com and use the coupon code SpaceTime at checkout.In this episode of SpaceTime, we uncover exciting new research challenging our understanding of dark matter, reveal hidden treasures beneath the Earth's surface, and explore the potential for life on Titan, Saturn's enigmatic moon.Modified Newtonian Dynamics: A Dark Matter AlternativeRecent studies suggest that modified Newtonian dynamics (MOND) may serve as a viable alternative to the elusive dark matter hypothesis. This theory, proposed by physicist Mordecai Milgrom, modifies Newton's laws to explain the gravitational behavior observed in galaxies without relying on dark matter. We delve into the latest findings that support MOND, including a novel method for measuring gravity in wide binary star systems, which indicates that gravity may actually be stronger than Newton's predictions under certain conditions.Earth's Hidden Gold ReservesA groundbreaking study reveals that Earth's core may contain vast reserves of gold and other precious metals, far beyond what is accessible on the surface. Researchers discovered traces of ruthenium in volcanic rocks from Hawaii, suggesting that these metals originated from the core and are leaking into the mantle. This research opens new avenues for understanding Earth's internal dynamics and the movement of materials from the core to the surface.Searching for Life's Chemistry on TitanNASA's upcoming Dragonfly mission aims to investigate the intriguing chemistry of life on Titan, Saturn's largest moon. With its organic-rich environment and unique geological features, Titan presents an opportunity to study prebiotic chemistry in a way that Earth cannot. We explore how Dragonfly will analyze the moon's surface and atmosphere to uncover clues about the processes that may have led to the emergence of life, potentially reshaping our understanding of habitability in the universe.www.spacetimewithstuartgary.com✍️ Episode ReferencesAstrophysical Journalhttps://iopscience.iop.org/journal/0004-637XNaturehttps://www.nature.com/nature/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 68 for broadcast on 6 June 202501:00 Modified Newtonian dynamics as an alternative to dark matter12:15 Earth's hidden gold reserves22:30 Searching for life's chemistry on Titan30:00 Science report: Ancient tool-making from whale bones and quantum computing breakthroughs
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SpaceX's Starship 9: A Journey Through Triumph and Turmoil
Sponsor Details:Incogni: When your data privacy matters, you need Incogni. To get your special SpaceTime deal and bonuses, visit www.incogni.com/stuartgary and let them do all the heavy lifting for youInsta360This episode is brought to you with the support of Insta360 - the innovators in 360-degree camera technology. Capture your adventures with the Insta360 X5, designed for extreme conditions. To claim a free invisible selfie stick with your purchase, visit store.insta360.com and use the promo code SpaceTime!In this episode of SpaceTime, we explore the latest developments in space exploration, lunar geology, and solar phenomena.SpaceX's Fiery Ninth Starship Test FlightThe latest test flight of SpaceX's Starship ended dramatically as both the orbiter and the booster were destroyed during reentry. Despite the fiery conclusion, SpaceX officials noted that the test was designed to push the limits of the spacecraft. The flight featured numerous milestones, including a successful hot staging and the first reflight of a booster. However, issues arose during the landing burn, resulting in a spectacular explosion. We discuss the implications of this test and what it means for future missions, including NASA's Artemis 3.Lunar Rocks and Their Magnetic MysteryA new study proposes that a significant asteroid impact may explain the presence of highly magnetic rocks on the Moon. Researchers suggest that a brief amplification of the Moon's weak magnetic field, caused by a large plasma-generated impact event, could account for the magnetism observed in some lunar samples. This hypothesis sheds light on the Moon's geological history and its magnetic properties, particularly in regions near the lunar south pole, where future missions are planned.Revealing the Sun's CoronaAstronomers have captured unprecedented details of the Sun's corona using a new adaptive optics system. This groundbreaking technology has allowed scientists to produce the clearest images of the corona yet, enhancing our understanding of coronal heating and solar eruptions. The new observations reveal dynamic features and turbulent flows within the corona, providing insights into the mechanisms driving space weather and its effects on Earth.www.spacetimewithstuartgary.com✍️ Episode ReferencesNature Astronomyhttps://www.nature.com/natureastronomy/Science Advanceshttps://www.science.org/journal/sciadvBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support.00:00 This is Space Time Series 28, Episode 67 for broadcast on 4 June 202501:00 SpaceX's ninth Starship test flight12:15 Lunar rocks and their magnetic mystery22:30 Revealing the Sun's corona30:00 Science report: New methods for green hydrogen production
Join host Stuart Gary for weekly explorations into Astronomy, Space, and Science News, featuring insights from 19 years on Australian Public Radio and industry experts.Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-your-guide-to-space-astronomy--2458531/support.
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