Pegasus Test The Pegasus air-launched space booster hypersonic test vehicle is carried aloft under the right wing of NASA's B-52 aircraft on its first captive flight from the Dryden Flight Research Center, Edwards, Calif., Nov. 21, 2010. SHARE IMAGE: Download Image: Full Size (1.28 MB) Photo By: NASA VIRIN: 101121-O-ZZ999-002C.JPG Photo Gallery