Spacetime With Stuart Gary

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 Sc