NASACast Audio 22 Nov 2017, 14:00 UTC Our virtual tour of the solar system continues with Mercury, the closest planet to the Sun. Since it’s tough to observe Mercury except at dawn or twilight, most of what we know about Mercury is from NASA’s Mariner 10 and MESSENGER missions.
StarDate Online 22 Nov 2017, 06:00 UTC The heaviest stars in the universe eventually blast themselves to bits. But like a kicker getting ready to try a game-winning field goal, they first get in a few practice swings. These smaller explosions blast out shells of hot gas that expand at a million miles an hour.
SpaceTime with Stuart Gary 22 Nov 2017, 02:26 UTC Stream episodes on demand from www.bitesz.com (mobile friendly) *More clues about our interstellar visitor Astronomers have released new details about a mysterious interstellar visitor which sped through our solar system during September and October. The new observations show the object -- known as 1i/2017 U1 -- measures some 180 by 30 meters and is shaped like a fat cigar, half a city block long. *Why the star Regulus is almost ripping apart A new study of the star Regulus indicates it’s almost spinning fast enough to literally rip itself apart. The findings reported in the journal Nature Astronomy show the star has a spin rate of 96.5 per cent of its angular velocity needed for break-up. *Another gravity wave discovery from merging black holes Scientists have confirmed another detection of gravitational waves generated by the collision of two stellar mass back holes. This latest detection involved the merger of two relatively light black holes, with 7 and 12 times the mass of the Sun -- a billion light years away. *Pluto’s freezer explained A new study of Pluto’s atmosphere may explain why the dwarf planet at the outer rim of the solar system is so much colder than predicted. The ...
StarDate Online 21 Nov 2017, 06:00 UTC By the time the universe was a billion years old, something had given it a real charge. That “something” could be the first galaxies. And thanks to some help from cosmic magnifying glasses, astronomers have seen enough early galaxies to make that possibility more likely.
ESOcast 20 Nov 2017, 16:00 UTC For the first time ever astronomers have studied an asteroid that has entered the Solar System from interstellar space. Observations from ESO’s Very Large Telescope in Chile and other observatories around the world show that this unique object was travelling through space for millions of years before its chance encounter with our star system. It appears to be a dark, reddish, highly-elongated rocky or high-metal-content object.
Are We Alone? 18 Nov 2017, 04:18 UTC We’re hearing about harassment of, and barriers to, women seeking careers in politics and entertainment. But what about science? Science is supposed to be uniquely merit-based and objective. And yet the data say otherwise. A new study reveals widespread harassment of women of color in space science. We look at the role that a hostile work environment plays in keeping women from pursuing scientific careers. While more women than ever are holding jobs in science, the percentage in tech and computer science has flattened out or even dropped. A memo from a software engineer at an Internet giant claims it’s because female brains aren’t suited for tech. Find out what the science says. Plus, women staring down discrimination. One woman’s reaction to her guidance counselor’s suggestion that she skip calculus and have babies. And SACNAS, the organization changing the face of science for Latina and Native American women. Guests: Jill Tarter - Astronomer, founding member of the SETI Institute, and member of the SETI Institute Board of Trustees. She is the subject of a biography by writer Sarah Scoles: “Making Contact: Jill Tarter and the Search for Extraterrestrial Intelligence.” Angela Saini – Journalist and author of “Inferior: How Science Got ...
StarTalk Radio 17 Nov 2017, 21:35 UTC The universe is a hostile place. What would we do if a planet-destroying asteroid or comet strike were imminent? Do we have plans in place? Bill Nye and comic co-host Chuck Nice are back to answer fan-submitted Cosmic Queries about defending the Earth. NOTE: StarTalk All-Access subscribers can watch or listen to this entire episode commercial-free. Find out more here: https://www.startalkradio.net/all-access/cosmic-queries-defending-our-planet-with-bill-nye/
SpaceTime with Stuart Gary