A podcast about topics in Astronomy from Chris Impey, Distinguished Professor of Astronomy at Steward Observatory and the University of Arizona. Check out our classes on Coursera. Introduction to Astronomy: https://www.coursera.org/learn/astro, Astrobiology: https://www.coursera.org/learn/astrobiology-exploring-other-worlds, and The History and Philosophy of Astronomy: https://www.coursera.org/learn/knowing-the-universe