On Aug. 21, a SpaceX Falcon 9 rocket carried the Boeing-built X-37B Space Force space plane to orbit on its eighth mission.

During its secretive mission, the X-37B will test new laser communications gear and a "quantum" navigation sensor.

Another U.S. military mini shuttle blasted off Thursday night to conduct classified experiments in space.

SpaceX is planning for a rocket launch from Vandenberg Space Force Base on Friday morning. The Falcon 9 rocket will carry 24 ...