Ars Technica's Nathan Mattise talked with educator, author and former astronaut Mike Massimino at Collision Conference 2017 about his new book, his experience in space, and as an actor on the TV show Big Bang Theory. Read the article: https://arstechnica.com/science/2017/05/once-an-astronaut-now-mike-massimino-cant-wait-to-be-a-space-tourist/