Test gods: tragedy and triumph in the new space race

'Masterly' New York Times'Riveting' Scott Kelly'Remarkable' The TimesWhen Richard Branson founded Virgin Galactic in 2004, his goal was simple: to offer paying customers a trip to space by the end of the decade. Seventeen years, countless delays, and one catastrophic crash later, his space tourism dream may finally be on the verge of reality[Bokinfo]