53: How big? How far? How fast? with Dr. Beaton
Dr. Rachael Beaton and I try "Grass Jelly Drink" and talk about one of the major fundamental constants of the universe; the Hubble Constant. She explains what it is and why she and her colleagues are ...
10 Jul 201618min
52: Eternal sunshine of the Galactic Center with Dr. Ramirez
Dr. Solange Ramirez visits the show to talk galaxies, supermassive black holes, and the gravity that ties them together.
3 Jul 201615min
51: When Mars was the "Pink Planet" with Dr. Smith
Dr. Issac Smith visits the show to talk about one of Mars' past ice ages; a time when most of the planet was covered in ice. He talks about how he made this discovery by looking at the layers of ice d...
26 Jun 201614min
50: Ganymede and Iapetus with Dr. Singer
Returning guest Dr. Kelsi Singer talks about two of the icy moons of our solar system, Ganymede and Iapetus. She talks about the types of craters we see on their surfaces, and what they can teach us a...
19 Jun 201612min
49: Every known object in the Solar System with Jon Giorgini
Jon talks about JPL's Horizons, an amazing, publicly available system that keeps track of every known object in the solar system. Planets, moons, asteroids, spacecraft, you name it: over 715,000 in to...
12 Jun 201615min
48: Threading an asteroid through the eye of a keyhole with Dr. Chodas
This week's guest is Dr Paul Chodas, who directs JPL's Center for Near-Earth Object Studies. He explains how predicting where an asteroid is going can get complicated when the asteroid gets close to a...
5 Jun 20169min
47: Punching an asteroid with Dr. Walsh
Dr. Kevin Walsh visits the show to talk about a new NASA mission that will launch later this year: OSIRIS REx! This spacecraft will visit an asteroid, grab a bit of surface material, and return the ma...
29 Mai 201612min
46: Spacecraft no bigger than a breadbox with Dr. Asphaug
Professor Erik Asphaug stops by the show to discuss AOSAT-1, a tiny spacecraft that will contain experiments to study the surface of asteroids. AOSAT-1 will rotate once every minute, creating a force ...
22 Mai 201612min
