Video: Liftoff of Delta 4 with WGS 7

NASA’s OSIRIS-REx spacecraft is about to be sealed inside the nose fairing of its Atlas 5 rocket booster for a seven-year voyage to asteroid Bennu and back to Earth on a mission to seek out clues to the origin of life and the chaotic early solar system.

In the last few months, teams of SpaceX engineers working on the flat coastal plains of South Texas and in a nondescript industrial yard on Florida’s Space Coast have been building two futuristic-looking stainless steel rockets — or Starships — prototypes for a reusable vehicle the company claims could one day ferry people to Mars.

This gallery of U.S. Air Force photos show technicians, wearing protective SCAPE suits, initially check for hazardous hypergolic fuel vapors around the X-37B spaceplane on the Shuttle Landing Facility runway and the subsequent tow of the vehicle to its newly-renovated hangar at the Kennedy Space Center.