An Air Force X-37B spaceplane just completed its 718th day in orbit, making it the longest mission yet for a secretive military test program. The US military has launched five uncrewed X-37B spaceplanes into orbit over the past decade, and each flight has been longer than its predecessor. OTV-5 blasted …
Read More »X-37B Breaks Another Record: 719 Days of Orbital Spaceflight and Counting
