SpaceTime with Stuart Gary

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Snowball Earth Evidence, Blue Origin's Parachute Mishap, and the Moon's Horizon Illusion: S28E23 Feb 21, 2025

Show notes

SpaceTime Series 28 Episode 23
The Astronomy, Space and Science News Podcast
Snowball Earth Evidence, Blue Origin's Parachute Failure, and the Moon Illusion Explained
In this episode of SpaceTime, we dive into groundbreaking geological research that provides compelling evidence for the Snowball Earth hypothesis, suggesting that glaciers may have covered the planet from pole to pole hundreds of millions of years ago. This research reveals insights into Earth's climatic history and the emergence of multicellular life following this extreme glaciation event.
Blue Origin's Lunar Gravity Mission
We also discuss the recent Blue Origin mission, where the New Shepard spacecraft experienced a parachute failure during a lunar gravity simulation flight. Despite the malfunction, mission managers confirm that the capsule was designed to land safely with two parachutes, and investigations are underway to understand the issue.
The Moon Illusion: Why Does It Appear Larger on the Horizon?
Additionally, we explore the fascinating phenomenon known as the Moon illusion, which causes the Moon to appear larger when it is near the horizon compared to when it is high in the sky. We delve into the psychological and perceptual factors that contribute to this optical illusion, despite the Moon's actual size remaining constant.
00:00 Space Time Series 28 Episode 23 for broadcast on 21 February 2025
00:49 Evidence supporting the Snowball Earth hypothesis
06:30 Implications for Earth's climatic history
12:15 Blue Origin's lunar gravity mission details
18:00 Analysis of parachute failure during descent
22:45 The Moon illusion and its psychological explanations
27:00 Understanding optical illusions in astronomy
30:15 The self-domestication of wolves and its implications
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✍️ Episode References
NASA
https://www.nasa.gov
Proceedings of the National Academy of Sciences
https://www.pnas.org
New England Journal of Medicine
https://www.nejm.org
Royal Society B
https://royalsocietypublishing.org/journal/rspb
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Van Allen's New Belts, Alien Oceans and Life, and Massive Black Hole Jets Uncovered: S28E22 Feb 19, 2025

Show notes

SpaceTime Series 28 Episode 22
The Astronomy, Space and Science News Podcast
New Van Allen Radiation Belts, Alien Oceans and Signs of Life, and the Largest Black Hole Radio Jet Ever Detected
In this episode of SpaceTime, we uncover the discovery of two new temporary Van Allen radiation belts created by a massive solar storm that struck Earth in May 2024. This event not only produced stunning auroras but also highlighted the importance of understanding the dynamics of radiation belts for the safety of satellites and astronauts. The findings, reported by NASA's Colorado Inner Radiation Belt Experiment, reveal that these belts can last significantly longer than previously thought, with implications for future solar storms and spaceflight safety.
Searching for Life in Alien Oceans
We also explore the challenges of detecting signs of extraterrestrial life in the subsurface oceans of icy moons like Saturn's Enceladus. A new study suggests that the unique physics of these oceans could hinder the movement of biological signatures from deep waters to the surface, complicating the search for life beyond Earth. This research emphasizes the need to understand ocean dynamics in the search for life in our solar system.
The Largest Black Hole Radio Jet in the Early Universe
Additionally, astronomers have identified the largest radio jet ever seen in the early universe, spanning an astonishing 200,000 light years. This discovery sheds light on the formation of massive jets and quasars, providing crucial insights into the evolution of galaxies in the early cosmos. The quasar, which formed when the universe was just 9% of its current age, challenges previous assumptions about the conditions needed for such powerful jets to form.
00:00 Space Time Series 28 Episode 22 for broadcast on 19 February 2025
00:49 Discovery of new Van Allen radiation belts
06:30 Implications of the May solar storm
12:15 Challenges in detecting life in Enceladus's oceans
18:00 The significance of ocean dynamics in extraterrestrial life searches
22:45 The largest black hole radio jet ever observed
27:00 Understanding quasars and their impact on galaxy evolution
30:15 The implications of AI self-replication
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✍️ Episode References
NASA
https://www.nasa.gov
Geophysical Research Space Physics
https://agupubs.onlinelibrary.wiley.com/journal/19448007
Communications and Earth Environment
https://www.nature.com/ncomms/
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
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Earth's Inner Core Mysteries, China's Lunar Quest, and Hot Jupiter Insights: S28E21 Feb 17, 2025

Show notes

SpaceTime Series 28 Episode 21
The Astronomy, Space and Science News Podcast
Shifting Dynamics of Earth's Inner Core, China's Lunar South Pole Mission, and Insights into Hot Jupiter Exoplanets
In this episode of SpaceTime, we explore groundbreaking research revealing that Earth's inner core may be less solid than previously believed. A new study indicates that the near surface of the inner core is undergoing structural transformations, influenced by interactions with the turbulent outer core. This discovery provides fresh insights into the dynamics of Earth's core and its impact on the planet's magnetic field and rotation.
China's Chang'e 7 Mission: A Quest for Lunar Water Ice
We also discuss China's upcoming Chang'e 7 mission, set to launch next year, which aims to search for water ice at the lunar south pole. This mission will employ advanced technologies to locate and analyze water ice deposits, crucial for supporting future manned missions to the Moon and beyond. The Chang'e 7 mission will include an orbiter, lander, rover, and a mobile hopper designed for traversing shadowed craters.
Hot Jupiter Progenitor: New Discoveries in Exoplanet Research
Additionally, we delve into the fascinating discovery of a hot Jupiter exoplanet with an eccentric orbit, shedding light on the formation processes of these gas giants. The research indicates that this planet has likely been influenced by a binary star system, providing new evidence for the mechanisms behind hot Jupiter migration and evolution.
00:00 Space Time Series 28 Episode 21 for broadcast on 17 February 2025
00:49 New findings on Earth's inner core
06:30 Overview of China's Chang'e 7 mission
12:15 Insights from the discovery of a hot Jupiter exoplanet
18:00 Implications for planetary formation theories
22:45 The significance of lunar water ice for future missions
27:00 Understanding the dynamics of celestial bodies
30:15 The impact of climate change on global temperatures
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✍️ Episode References
NASA
https://www.nasa.gov
Nature Geoscience
https://www.nature.com/ngeo/
Journal of Nature Climate Change
https://www.nature.com/nclimate/
Macquarie University
https://www.mq.edu.au
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Earth's Elemental Mysteries, Ariel's Geological Secrets, and Comet Atlas's Demise: S28E20 Feb 14, 2025

Show notes

SpaceTime Series 28 Episode 20
The Astronomy, Space and Science News Podcast
New Discoveries on Earth's Elements, Uranus's Moon Ariel, and the Fate of Comet Atlas
In this episode of SpaceTime, we delve into a groundbreaking study that challenges long-held beliefs about the origins of Earth's missing moderately volatile elements, such as copper and zinc. This research suggests that rather than being lost during the early formation of the solar system, these essential elements were likely retained by the first planetesimals and lost later due to violent cosmic collisions during planetary growth, reshaping our understanding of planetary chemistry and habitability.
Uranus's Moon Ariel: A Window to Its Interior
We also explore the fascinating trench-like features on Uranus's moon Ariel, which may serve as conduits for internal materials. New research indicates that these medial grooves could provide insights into Ariel's geological history and potential subsurface oceans, highlighting the complex interplay of tectonic and volcanic activities on the moon's surface.
Comet Atlas: A Dying Wonder
Additionally, we discuss the fate of Comet G3 Atlas, which has recently passed perilously close to the Sun, resulting in the fragmentation of its nucleus. As it fades from view, Atlas becomes a headless wonder, leaving behind a trail of debris that will continue to orbit the Sun. This episode also features a look at the stunning night skies of February, including the iconic constellations and celestial events to observe.
00:00 Space Time Series 28 Episode 20 for broadcast on 14 February 2025
00:49 New insights into Earth's missing elements
06:30 Trench-like features on Uranus's moon Ariel
12:15 The demise of Comet G3 Atlas
18:00 February night sky highlights
22:45 The constellation Orion and its myths
27:00 Exploring the Pleiades and other celestial wonders
30:15 The significance of the Milky Way in stargazing
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✍️ Episode References
NASA
https://www.nasa.gov
Science Advances
https://www.science.org/journal/sciadv
Planetary Science Journal
https://www.journals.elsevier.com/planetary-science-journal
Sky and Telescope
https://skyandtelescope.org
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Earth's Water Origins, Bennu's Salty Secrets, and Marsquakes Unveiled: S28E19 Feb 12, 2025

Show notes

SpaceTime Series 28 Episode 19
The Astronomy, Space and Science News Podcast
New Insights into Earth's Water, Asteroid Bennu's Composition, and Marsquake Triggers
In this episode of SpaceTime, we investigate a groundbreaking study that challenges previous beliefs about when water arrived on Earth. New findings suggest that water may have come in during the later stages of Earth’s formation, providing fresh perspectives on the origins of life on our planet. The study highlights the importance of molybdenum isotopes in understanding the timing of water delivery and the conditions necessary for life.
Searles Lake and Asteroid Bennu
We also explore the intriguing similarities between Searles Lake in California and the asteroid Bennu, as researchers find that both environments share common water-soluble minerals. The Osiris Rex mission has revealed that Bennu's samples contain evaporite minerals formed under wet conditions, shedding light on the potential for life-sustaining elements in our solar system's past.
Meteoroid Impacts and Marsquakes
Additionally, a new study indicates that meteoroid impacts may play a more significant role in triggering marsquakes than previously considered. Analyses from NASA's Mars InSight lander reveal that many seismic events on Mars could be linked to impacts, challenging existing assumptions about the planet's seismic activity.
00:00 Space Time Series 28 Episode 19 for broadcast on 12 February 2025
00:49 Water arrival on Earth
06:30 Searles Lake and asteroid Bennu
12:15 Meteoroid impacts and Marsquakes
18:00 Changes in men's height and weight
22:45 Discovery of ancient bird fossils in Antarctica
27:00 The best way to boil an egg
30:15 AI and national security concerns
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✍️ Episode References
NASA
https://www.nasa.gov
Geochemistry and Cosmochemistry
https://www.elsevier.com/journals/geochemistry-and-cosmochemistry
Nature
https://www.nature.com
Geophysical Research Letters
https://agupubs.onlinelibrary.wiley.com/journal/19448007
Biology Letters
https://royalsocietypublishing.org/journal/bl
Nature Communications
https://www.nature.com/ncomms/
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Asteroid Threats, Dark Matter Discoveries, and Martian Volcanism Unveiled: S28E18 Feb 10, 2025

Show notes

SpaceTime Series 28 Episode 18
The Astronomy, Space and Science News Podcast
Asteroid Threat Level Rusty, Dark Matter Experiment, and Martian Lava Rocks
In this episode of SpaceTime, we discuss the alarming increase in the threat level of near-Earth asteroid 2024 YR4, now assessed at a 2.3% chance of impacting Earth on December 22, 2032. With astronomers worldwide closely monitoring its trajectory, we explore the potential consequences of an impact from this asteroid, including the possibility of a catastrophic airburst or a significant surface collision.
New Dark Matter Experiment in Space
We also delve into an ambitious new experiment aimed at uncovering the mysteries of dark matter. Researchers are testing a device that could potentially detect dark matter by measuring tiny signals in a zero-gravity environment. This groundbreaking approach seeks to provide insights into the elusive substance that constitutes approximately 85% of the universe's mass.
Insights from Martian Lava Rocks
Additionally, we examine findings from NASA's Mars Perseverance Rover, which are shedding light on a critical period in Martian history. The analysis of igneous rocks in Jezero Crater suggests that the Martian crust was formed through widespread volcanism, offering a glimpse into the planet's geological evolution and its implications for understanding the early solar system.
00:00 Space Time Series 28 Episode 18 for broadcast on 10 February 2025
00:49 Increased threat from asteroid 2024 YR4
06:30 New dark matter detection experiment in space
12:15 Martian lava rocks and the history of the Red Planet
18:00 Microplastics accumulation in the human brain
22:45 WHO review on radio wave exposure and cancer
27:00 Genetically modified rice with reduced methane emissions
30:15 Jane Goodall's belief in Sasquatch and its implications
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✍️ Episode References
NASA
https://www.nasa.gov
Journal of Science Advances
https://www.science.org/journal/sciadv
Nature Medicine
https://www.nature.com/nm/
Molecular Plant
https://www.cell.com/molecular-plant/home
Australian Skeptics
https://www.skeptics.com.au
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Io's Volcanic Powerhouse, Ceres' Organic Origins, and the Quest for Distant Exoplanets: S28E17 Feb 07, 2025

Show notes

SpaceTime Series 28 Episode 17
The Astronomy, Space and Science News Podcast
Volcanic Activity on Io, Ceres and the Building Blocks of Life, and New Exoplanet Search Technology
In this episode of SpaceTime, we explore the astonishing discovery of the largest volcanic hotspot ever observed on Jupiter's moon, Io. NASA's Juno mission reveals a feature that dwarfs Earth's Lake Superior and produces eruptions with six times the energy output of all the world's power plants. This unprecedented volcanic activity is driven by intense gravitational interactions with Jupiter, resulting in a dynamic landscape riddled with approximately 400 volcanoes.
The Mystery of Ceres' Organic Compounds
We also delve into new findings regarding the dwarf planet Ceres, where scientists have determined that organic deposits on its surface likely did not originate from its interior. Instead, these building blocks of life may have arrived through impacts from meteoroids, raising questions about the origins of life-sustaining compounds in our solar system.
Advancements in Exoplanet Detection Technology
Additionally, we discuss the latest advancements in technology designed to search for Earth-like exoplanets. The newly developed coronagraph for NASA's Nancy Grace Roman Space Telescope will significantly enhance our ability to directly image distant planets by blocking out starlight, paving the way for future missions aimed at identifying habitable worlds beyond our solar system.
00:00 Space Time Series 28 Episode 17 for broadcast on 7 February 2025
00:49 Discovery of a massive volcanic hotspot on Io
06:30 Insights into organic compounds on Ceres
12:15 New technology for exoplanet detection
18:00 Omega-3 fatty acids and biological aging
22:45 Infants' sense of smell development
27:00 Tasmania's tallest trees documented
30:15 Flat Earth theory and recent Antarctic explorations
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✍️ Episode References
NASA
https://www.nasa.gov
Nature
https://www.nature.com
Journal of Geophysical Research
https://agupubs.onlinelibrary.wiley.com/journal/21699356
Journal of Astrobiology
https://www.journals.elsevier.com/astrobiology
Australian Journal of Biology
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Moon's Hidden Geology, Venus' DaVinci Mission, and Titan's Atmospheric Secrets: S28E16 Feb 05, 2025

Show notes

SpaceTime Series 28 Episode 16
The Astronomy, Space and Science News Podcast
New Discoveries on the Moon, Venus Exploration, and Titan's Atmosphere
In this episode of SpaceTime, we delve into a groundbreaking study revealing that the Moon may not be as geologically inactive as previously believed. Observations of small ridges on the lunar far side suggest recent tectonic activity, indicating that the Moon's geological history is more dynamic than once thought. Researchers found that these features, formed within the last 200 million years, could have significant implications for future lunar missions.
NASA's Davinci Mission to Venus
We also discuss NASA's upcoming Davinci mission, set to explore the mysteries of Venus. This innovative mission will deploy a descent probe into the planet's thick atmosphere, capturing high-resolution images and analyzing its unique geological features, including the ancient Tesserae that may provide insights into Venus's past.
Understanding Titan's Atmosphere
Additionally, we explore new research on Saturn's moon Titan, which maintains its dense nitrogen-rich atmosphere through chemical reactions occurring deep beneath its surface. The findings suggest that Titan's atmosphere, which features liquid methane rain and a complex organic chemistry, is replenished by internal processes that have puzzled scientists since its discovery.
00:00 Space Time Series 28 Episode 16 for broadcast on 5 February 2025
00:49 New findings on the geological activity of the Moon
06:30 Overview of NASA's Davinci mission to Venus
12:15 How Titan maintains its atmosphere
18:00 Increase in temperature-related deaths in Europe
22:45 Discovery of magma chambers in dormant volcanoes
27:00 Creation of bipaternal mice using stem cell engineering
30:15 Overview of Deepseek AI chatbot
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✍️ Episode References
NASA
https://www.nasa.gov
Planetary Science Journal
https://www.elsevier.com/journals/planetary-science-journal
Geochemistry, Geophysics, Geosystems
https://agupubs.onlinelibrary.wiley.com/journal/15252027
Nature Medicine
https://www.nature.com/nm/
Nature Geoscience
https://www.nature.com/ngeo/
Cell Stem Cell
https://www.cell.com/cell-stem-cell/home
TechAdvice Life
https://www.techadvice.life/
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Bennu's Building Blocks of Life, Asteroid YR4's Threat, and Lunar Dome Mysteries: S28E15 Feb 03, 2025

Show notes

SpaceTime Series 28 Episode 15
The Astronomy, Space and Science News Podcast
Building Blocks of Life on Asteroid Bennu, New Asteroid Threat, and Lunar Dome Mission
In this episode of SpaceTime, we uncover groundbreaking discoveries from the asteroid Bennu, where scientists have detected the molecular building blocks of life in samples returned by NASA's Osiris Rex spacecraft. These findings indicate a rich history of salt water on Bennu, suggesting that the essential conditions for life may have been widespread throughout the early solar system. The analysis reveals 14 amino acids and five nucleobases, hinting at the potential for life beyond Earth.
A New Asteroid Threat to Earth
We also discuss the newly identified asteroid 2024 YR4, which poses a significant risk with a 1 in 83 chance of impact on December 22, 2032. This near-Earth object, measuring between 40 and 100 meters wide, has astronomers concerned due to its potential for causing a powerful airburst explosion or even a surface impact.
Investigating Mysterious Lunar Domes
Additionally, NASA is gearing up for a mission to explore the enigmatic Gruthusen domes on the Moon, as part of the Lunar Vice mission by Firefly Aerospace. This mission aims to unravel the origins of these dome-like structures and assess the Moon's volcanic history, providing insights into its evolution and potential resources for future exploration.
00:00 Space Time Series 28 Episode 15 for broadcast on 3 February 2025
00:49 Discovery of building blocks of life in Bennu samples
06:15 New asteroid threat 2024 YR4
12:30 NASA's Lunar Vice mission to study lunar domes
18:00 CIA assessment on COVID-19 origins
22:45 Elderberry juice and metabolic health
27:00 Feathered dinosaur tail preserved in amber
30:15 Link between UFO sightings and economic conditions
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✍️ Episode References
NASA
https://www.nasa.gov
Nature
https://www.nature.com
Nature Astronomy
https://www.nature.com/natureastronomy/
Current Biology
https://www.cell.com/current-biology/home
Journal of Nutrients
https://www.mdpi.com/journal/nutrients
Australian Skeptics
https://www.skeptics.com.au
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Moon Rock Asteroid Discovery, Lunar Landers Launch, and Trump's Martian Ambitions: S28E14 Jan 31, 2025

Show notes

SpaceTime Series 28 Episode 14
The Astronomy, Space and Science News Podcast
Asteroid from the Moon, Lunar Landers, and Trump’s Mars Ambitions
In this episode of SpaceTime, we explore the intriguing discovery of a small asteroid, designated 2024 PT5, which is believed to be a fragment of the Moon ejected into space by a historic impact. This 10-meter wide near-Earth object offers new insights into both asteroid and lunar science, as researchers confirm its composition aligns closely with lunar rock samples.
Two Lunar Landers Launch for the Moon
SpaceX successfully launched two lunar landers, Firefly Aerospace's Blue Ghost and ispace's Resilience, as part of NASA's Commercial Lunar Payload Services program. These missions aim to deliver critical hardware to the Moon in preparation for a sustainable human presence under the Artemis program. Blue Ghost will conduct a variety of scientific experiments, including lunar subsurface drilling and thermal measurements, while Resilience will deploy a forward robotic micro rover to explore the lunar surface.
Trump's Vision for Mars
In a bold statement during his inauguration, US President Donald Trump pledged to plant the Stars and Stripes on Mars, reaffirming America’s commitment to space exploration. This ambitious goal aligns with SpaceX's plans to colonize the Red Planet, as both the US and China ramp up efforts for lunar and Martian exploration.
00:00 Space Time Series 28 Episode 14 for broadcast on 31 January 2025
00:49 Discovery of asteroid 2024 PT5 as a lunar fragment
06:30 Launch of Blue Ghost and Resilience lunar landers
12:15 President Trump's pledge to plant the flag on Mars
18:00 Risks associated with glucagon-like peptide 1 receptor agonists
22:45 New methods for zero carbon dioxide ammonia production
27:00 Discovery of the world’s oldest three-dimensional map
30:15 Concerns over unverified academic titles
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Become a supporter of this Podcast for as little as $3 per month and access commercial-free episodes plus bonuses: https://www.spacetimewithstuartgary.com/about
✍️ Episode References
NASA
https://www.nasa.gov
SpaceX
https://www.spacex.com
Astrophysical Journal Letters
https://iopscience.iop.org/journal/2041-8205
Nature Medicine
https://www.nature.com/nm/
Oxford Journal of Archaeology
https://academic.oup.com/ojl
Australian Skeptics
https://www.skeptics.com.au
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