Photos: Atlas 5 rolls out for Friday launch to GPS constellation

The United Launch Alliance Atlas 5 rocket was transfered from its assembly building to the pad at Cape Canaveral’s Complex 41 today for Thursday’s launch of the U.S. military’s third SBIRS GEO missile warning satellite.

The nuclear power generator for NASA’s Perseverance rover has been installed on the spacecraft atop an Atlas 5 rocket at Cape Canaveral, and mission managers gave a green light Wednesday to continue preparations for the rover’s July 30 launch toward Mars.

This is a collection of images taken during the three previous flights of the U.S. Air Force’s X-37B Orbital Test Vehicle mini space shuttle.