Skylab's May 14, 1973 launch into lowEarth orbit was the nation's first foray into significant scientific research in microgravity. The three Skylab crews proved humans could live and work effectively for long durations in space. This NASA video recounts the history of the program and showcases Skylab's legacy as a major stepping stone to the successful construction and operation of the International Space Station and future longduration human missions to asteroids, Mars and other destinations.