Orbital ATK has been doing air launch to orbit[0] since 1990 with their Pegasus rocket. They've had three dozen successful launches since then[1]. [0] https://

Orbital ATK has been doing air launch to orbit[0] since 1990 with their Pegasus rocket. They've had three dozen successful launches since then[1]. [0] https://en.wikipedia.org/wiki/Air_launch_to_orbit https://en.wikipedia.org/wiki/Air_launch_to_orbit [1] https://en.wikipedia.org/wiki/Pegasus_(rocket)#Launch_history https://en.wikipedia.org/wiki/Pegasus_(rocket)#Launch_histor...