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In this episode of SpaceTime, we delve into the mysterious absence of river deltas on Titan, Saturn’s largest moon. Despite having rivers of methane and ethane, a new study published in the Journal of Geophysical Research Planets reveals that Titan is largely devoid of these geological features, raising intriguing questions about its unique processes and history. We discuss the implications of this finding and what it means for our understanding of Titan's climate and geological past.
Volcanic History of MarsNext, we explore groundbreaking research from NASA's Perseverance rover, which has uncovered a diverse array of iron-rich volcanic rocks in Jezero Crater. This study, reported in Science Advances, provides fresh insights into Mars's geological history and its potential to have supported ancient life. The findings reveal complex volcanic processes that may have occurred on the Red Planet, enhancing our understanding of its habitability.
Rare Earth Metals in Exoplanet AtmosphereFinally, we celebrate the discovery of rare Earth metals in the atmosphere of Kelt 9b, one of the hottest known exoplanets. Astronomers have detected vaporized elements such as sodium, magnesium, and the rare Earth metals scandium and yttrium, marking a significant milestone in exoplanet research. This discovery opens new avenues for understanding the atmospheres of distant worlds and their unique compositions.
www.spacetimewithstuartgary.com✍️ Episode ReferencesJournal of Geophysical Research Planets
https://agupubs.onlinelibrary.wiley.com/journal/21699356Science Advances
https://www.science.org/journal/sciadvAstronomy and Astrophysics
https://www.aanda.org/NASA
https://www.nasa.gov/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 52 for broadcast on 30 April 2025
00:46 Scientists are looking for Titan's missing river deltas
06:02 NASA's Mars Perseverance Rover is analyzing Martian volcanic rocks
10:17 Astronomers have discovered rare Earth metals in the atmosphere of a hot exoplanet
17:58 People who were conceived during colder seasons store fat differently, study finds
20:25 YouTube is celebrating its 20th birthday with some interesting stats
22:16 Google to launch Android 16 three or four months earlier than Apple's iOS