160: Going back in time with Dr. Bottke
Dr. Bill Bottke stops by the show to talk about ancient craters on the Moon and Earth. He tells us about how you can figure out crater ages by looking at the nearby rocks, and how that led him and his...
22 Sep 201920min
159: Constellations and coordinates with Dr. Rich
Dr. Jeff Rich returns to the show to talk about the night sky. He explains how astronomers used constellations to communicate. He also tells us that anyone can invent their own constellation. In a tim...
8 Sep 201912min
158: Planetary Defense Mission with Dr. Ernst
Dr. Carolyn Ernst tells us about DRACO, a camera on the DART mission. DRACO will take critical images in the final seconds of the mission. Dr. Ernst talks about how heritage is important in spacefligh...
25 Aug 201917min
157: Modeling impacts with Dr. Boslough
Dr. Mark Boslough describes what happens when an asteroid enters Earth's atmosphere. He tell the story of how he learned of the historic 2013 Chelyabinsk impact. He also shares what it was like to see...
11 Aug 201913min
156: Measuring a collision with Dr. Thomas
Professor Cristina Thomas talks about NASA's first planetary defense mission: DART. DART is a spacecraft that will impact a tiny asteroid moon. She explains why ground-based telescope observations are...
28 Juli 201915min
155: Interstellar visitor with Dr. Knight
Dr. Matthew Knight tells us about a discovery that excited astronomers all around the world. 'Oumuamua is the first minor planet from outside our solar system that we have found. Dr. Knight describes ...
14 Juli 201914min
154: High speed impacts with Dr. Daly
Dr. Terik Daly talks about his experiments, where things hit other things at tens of thousands of miles per hour. These experiments create pressures greater than that at the center of the Earth, and t...
30 Juni 201914min
153: Stories behind the science with Sarah Kaplan
Sarah Kaplan of the Washington Post talks about science reporting. Reporters often tackle topics that are outside their expertise. Sarah explains the methods she uses to get at the truth. She also sha...
16 Juni 201917min
