Space.com: Officials are hurriedly looking for ways to save fuel on NASA’s $79 million lunar impactor mission after a crisis Saturday caused the spacecraft to burn more than half of its remaining propellant.The Lunar Crater Observation and Sensing Satellite used about 140 kilograms of maneuvering fuel to maintain the probe’s orientation in space Saturday, according to Dan Andrews, the mission’s project manager at Ames Research Center. Related News PickLunar missions to search for water