**AUDIO NOTE: We weren't in our home studio for this episode so we apologize for the audio issue during the first 90 seconds or so.** Mike Massimino could be considered a Renaissance man or a pure over-achiever. He's a retired NASA astronaut who made four space walks during two shuttle missions to the Hubble Telescope. He's a New York Times bestselling author of Spaceman: An Astronaut's Unlikely Journey to Unlock the Secrets of the Universe . He's a professor at Columbia University. He hosts