Earth’s Water Origins, Bennu’s Salty Secrets, and Marsquakes Unveiled: S28E19

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Recorded12 Feb 2025

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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 www.spacetimewithstuartgary.com (https://www.bitesz.com/nordvpn) Enjoy incredible discounts and bonuses! Plus, it’s risk-free with Nord’s 30-day money-back guarantee! ✌ Check out our newest sponsor - Old Glory (https://www.bitesz.com/oldglory) - Iconic Music and Sports Merch and now with official NASA merchandise. Well worth checking out... 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 (https://www.spacetimewithstuartgary.com/about) ✍️ 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/ Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime--2458531/support (https://www.spreaker.com/podcast/spacetime--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) . Episode link: https://play.headliner.app/episode/25544288?utm_source=youtube

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