Sky Walking - An Astronaut's Memoir - NASA Space Books : The Space Shop

With humanity and passion (and less swagger than Mike Mullane), Jones powerfully brings to life the world of the modern NASA astronaut. Confined to low Earth orbit, no longer tasked with high-profile trips to the Moon, a small corps of dedicated professional space travelers work on serious science and dream of the day they will fly into space.

Countless on-the-ground training hours prepare the astronauts for the rigors of space travel—practicing an extravehicular space walk in a 10-million-gallon tank or being flung around in a 100,000-horsepower centrifuge to acclimate to the eight g's of force experienced on lift-off.