The former launch commentator "offers a personal--and sometimes painful--look back at one of the darkest chapters in US human spaceflight" (Space.com). On January 28, 1986, the space shuttle Challenger launched from the Kennedy Space Center in Florida. Seventy-three seconds after launch, the fiery breach of a solid motor joint caused a rupture of the propellant tanks, and a stunned nation watched as flames engulfed the craft,...