72: New clues about Earth’s greatest mass extinction event

The world’s premier astronomy and space science podcast.Stream podcast episodes on demand from www.spacetimewithstuartgary.com (mobile friendly). *New clues about Earth’s greatest mass extinction eventHalogens released during the Siberian Traps eruption may have been one of the driving forces behind the world’s greatest mass extinction event.*The most detailed map yet of nearby galactic cosmic ray sourcesAstronomers have developed the most detailed map ever of cosmic ray sources in two of the Milky Way galaxies nearest neighbours.*New clues about supernovaeAstronomers have discovered a previously undetected flash just before the death of a star in a core collapse supernova explosion.*Saturn’s famous hexagon may tower above the cloudsThe long-lived Cassini mission revealed a surprising feature emerging at Saturn's northern pole as the ringed world was nearing its northern summertime -- a warming, high-altitude vortex with a hexagonal shape, akin to the famous hexagon seen deeper down in Saturn's clouds.*The Science ReportA new study claims being optimistic about stuff is actually good for your heart.Warnings the endangered Australian fur seal population is shrinking.E-commerce stores worldwide infected with new payment skimming malicious software.Scientists find evidence of cheese-making in Eastern Europe 7200 years ago.Alex on Tech – Apple say they’re not listening in.RSS feed: https://audioboom.com/channels/4642443.rssWould you prefer to have access to the special commercial-free version of SpaceTime? Help support the show, subscribe at Patreon....and share in the rewards. Details at www.patreon.com/spacetimewithstuartgary  Help support SpaceTime: The SpaceTime with Stuart Gary merchandise shop. Get your T-Shirts, Coffee Cups, badges, tote bag + more and help support the show. Check out the range: http://www.cafepress.com/spacetime Thank you. Plus: As a part of the SpaceTime family, you can get a free audiobook of your choice, plus 30 days free access from audible.com. Just visit www.audibletrial.com/spacetime or click on the banner link at www.spacetimewithstuartgary.com Email: [email protected] Join our mailing list to get your free Astronomy Daily Newsletter - details at  http://www.bitesz.com/join-our-mailing-list Learn more about your ad choices. Visit megaphone.fm/adchoices  See acast.com/privacy for privacy and opt-out information.Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.