Coleman is the author of the book Sharing Space: An Astronaut’s Guide to Mission Wonder and Making Change . CADY COLEMAN: It’s really the word that you used, Alison, and it’s the word mission, where there’s individual shuttle missions, there’s going to the space station, those missions, and there’s future missions. ALISON BEARD: That’s Cady Coleman, former NASA astronaut and author of Sharing Space, an Astronaut’s Guide to Mission, Wonder and Making Change.