Blast-Off! X-37B Space Plane's 4th National Security Mission Begins | Video
Wednesday, May 20, 2015 - 11:00
in Astronomy & Space
The Air Force space plane launched atop an United Launch Alliance Atlas V rocket on May 20th, 2015. AFSPC-5 mission payloads include the Orbital Test Vehicle 4 (OTV-4) and 10 cubesats.