The Hubble Space Telescope has revolutionized our understanding of the universe, but like any tool, it requires maintenance. Here retired astronaut Kathryn Sullivan describes her work on the NASA team that made this scientific masterpiece possible. The first American woman to walk in space, Sullivan recounts how she and other astronauts, engineers, and scientists launched, rescued, repaired Hubble, the most productive observatory ever built. Along the way, Sullivan chronicles her path to NASA through oceanography, and describes in vivid detail what liftoff feels like inside a spacecraft, shows us the view from a spacewalk, and reflects on the temporary grounding of the shuttle program after the Challenger disaster."A page-turner, Sullivan's memoir is for more than space buffs. It's for anyone who loves a good read about an adventurous life written by the person who lived it."—Homer Hickam