Shuttle Atlantis unwrapped ahead of public debut

VIDEO: After a cliff-hangar countdown, Atlantis thunders to life and majestically rockets into history, putting on one last sky show for spectators on NASA’s 135th and final shuttle launch on July 7, 2011. (Membership Required)

Fueled segments of the solid rocket boosters that will lift off on the first flight of NASA’s Space Launch System have arrived at the Kennedy Space Center in Florida, but officials will hold off on stacking the boosters until the SLS core stage completes a crucial test-firing later this year.

SpaceX rolled out the company’s first space-worthy Crew Dragon spacecraft and its Falcon 9 launcher to pad 39A at NASA’s Kennedy Space Center in Florida for the first time Thursday, beginning a series of fit checks before the commercial spaceship takes off on its first orbital test flight.