"Finding useful quantities of frozen water on the moon would have implications for space exploration. Not only would it provide water and oxygen for a manned moonbase, it would also give astronauts a source of hydrogen to use in rocket fuel. Extracting gases from water becomes cost-effective when the amount of ice in lunar soil rises above 1%... At the levels found, astronauts would have to process one cubic metre of lunar soil to get 100 millitres of water, or less than a fifth of a pint." "What we found was...an oasis in an otherwise desert on the moon..."