An Astronaut’s Guide to Life on EarthColonel Chris Hadfield has spent decades training as an astronaut and has logged nearly 4,000 hours in space. During this time he has broken into a Space Station with a Swiss army knife, disposed of a live snake while piloting a plane, been temporarily blinded while clinging to the exterior of an orbiting spacecraft, and become a YouTube sensation with his performance of David Bowie’s ‘Space Oddity’ in space.You Are Here: Around the World in 92 MinutesIn You Are Here, celebrated astronaut Chris Hadfield gives us the really big picture: this is our home, as seen from space. The millions of us who followed Hadfield’s news-making Twitter feed from the International Space Station thought we knew what we were looking at when we first saw his photos. But we may have caught the beauty and missed the full meaning.