Chris Hadfield, Astronaut, YouTube star, talks bringing space experience to Twitter, Facebook
Astronaut and author of "An Astronaut's Guide to Life on Earth," Col. Chris Hadfield, became a YouTube star for his rendition in space of David Bowie's "Space Oddity." In this extra, he speaks to "CBS This Morning" about making space approachable and how that's changed over the years with the advent of social media.