Of all of the astronauts we've had on the show over the years, few have been as outspoken as Clayton Anderson.With 167 days in space and numerous spaces walks, he has the experience that a chosen few have to speak on NASA, the past and future of space travel, as well as the growing rise of commercial space travel thanks to men like Elon Musk and Richard Branson.He has opinions, and he's unafraid to voice them.