Stargazer

Stargazer is a Lockheed L-1011 TriStar built in 1974, that was modified in 1994 for use by Orbital Sciences (now part of Northrop Grumman) as a mother ship launch pad for the Pegasus launch vehicle. , 45 rockets (containing nearly 100 satellites) have been launched from it, using the Pegasus-H and Pegasus-XL configurations. As of 2019, Stargazer is the only L-1011 airframe still airworthy. History The first Pegasus launch to use Stargazer was conducted on 27 June 1994 as the maiden flight of the Pegasus-XL. Previous launches used the NASA-operated Boeing NB-52B Balls 8, which was also used for four subsequent launches, as the original Pegasus could not be launched from Stargazer due to clearance issues. A modified version, the Pegasus-H, was introduced to rectify this. Stargazer was also used for captive tests and transportation of the X-34 hypersonic research aircraft; however, drop tests used Balls 8. Orbital Sciences also offer the aircraft for research flights. It is capable of carrying a payload to an altitude of .