A robotic space shuttle with stubby wings, tail fins, its belly covered with black thermal tiles, clam-shell doors that swing open to reveal a payload bay and a solar array for ultralong-duration missions rode into orbit Wednesday on the fourth mission of the Air Force’s reusable X-37B spaceplane project.

A new era in GPS navigation launched Sunday, when a SpaceX Falcon 9 rocket climbed into orbit with a Lockheed Martin-built satellite designed to beam higher-power positioning, navigation and timing signals around the world, providing military and civilian users with more accurate data that is more resistant to growing jamming threats.

Carrying more science research gear to the International Space Station than ever launched before by U.S. commercial logistics vehicles, the next Orbital ATK Cygnus freighter takes flight Tuesday.