REX 2 (Radiation EXperiment 2) was an American military minispacecraft launched from Vandenberg AFB by a Pegasus XL rocket. The rocket was carried aloft in the belly of a L-1011 aircraft to 12 km altitude before release and ignition. It is an Air Force Rome Laboratory ionospheric research satellite which tests the effects of the atmosphere on radio transmissions, and employs GPS for on-board navigation and attitude control.

Facts in Brief

Launch Date: 1996-03-09
Launch Vehicle: Pegasus XL
Launch Site: Vandenberg AFB, United States
Mass: 110.0 kg