sentences:  Unfortunately, on May 7, 1994, after the first Earth transfer orbit, a malfunction aboard the craft caused one of the attitude control thrusters to fire for 11 minutes, using up its fuel supply and causing "Clementine" to spin at about 80 rpm (see NASA Clementine Project Info).Under these conditions, the asteroid flyby could not yield useful results, so the spacecraft was put into a [[geocentric orbit]] passing through the [[Van Allen radiation belt]]s to test the various components on board.The mission ended in June 1994 when the power level onboard dropped to a point where the [[telemetry]] from the spacecraft was no longer intelligible.