Videos: Atlas 5 caps a generation of GPS launches

Two Chinese Yaogan military reconnaissance satellites launched this week, riding a Long March 2C booster into orbit on a mission that inaugurated the use of a new restartable upper stage to increase the rocket’s carrying capacity.

A wave of clock failures on Europe’s Galileo navigation satellites has not knocked any of the craft offline, but officials want to better understand the problem before launching more satellites into the fleet.

Astronauts Doug Hurley and Bob Behnken donned their SpaceX-made launch and entry flight suits Saturday and rode to pad 39A at the Kennedy Space Center in a final dress rehearsal before launch day.