sentences:  However, later studies made using the [[Arecibo Observatory|Arecibo radio telescope]] showed similar reflection patterns even from areas not in permanent shadow (and in which such volatiles cannot persist), leading to suggestions that "Clementine"s results had been misinterpreted and were probably due to other factors such as surface roughness.On May 7, 1994 (UTC) "Clementine" experienced a computer failure after it left Lunar orbit.The failure caused it to use up its remaining propellant, spinning the spacecraft up to 80 rotations per minute.