Video: Change of command aboard International Space Station

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.

Ground crews transferred an Antares rocket out of an assembly building to a launch pad on Virginia’s Eastern Shore in a major step before liftoff on Orbital Sciences’ third flight to resupply the International Space Station.

Concluding 80 days attached the International Space Station, the commercial Cygnus cargo ship will be detached to fly away Tuesday for an unprecedented onboard fire experiment before re-entering the atmosphere next week.