Video: Change of command aboard International Space Station

Officials have accepted a Friday launch date for a commercial cargo ship to the International Space Station after Range availability scuttled notions of moving up the Atlas 5 flight by a day.

Former NASA astronaut Peggy Whitson, with more time in space than any other American, rocketed back into orbit for the fourth time Sunday, riding a SpaceX Falcon 9 launcher from Florida with a fare-paying investor and private pilot, and the first two Saudi Arabian astronauts to fly to the International Space Station.

Closing out 52 days at the International Space Station, an automated Northrop Grumman Cygnus cargo craft left the research outpost Sunday to climb into a higher orbit for deployment of six CubeSats and further engineering experiments, before de-orbiting over Pacific Ocean later this month.