|Model: Lockheed L-1011-385-1-15 TriStar 100|
In the early 1990s, Orbital Sciences began to use a converted L-1011-100 named Stargazer to launch Pegasus rockets into orbit around Earth. This venture effectively rendered the small Scout rocket obsolete. This aircraft was also used in support of the X-34 program. NASA performed aerodynamic research on Orbital Science's L-1011 in 1995.