The lunar surface: The Sea of Rains (lower plain) and Sea of Cold (upper plain) on the Moon's surface. Early astronomers may not have been completely wrong thinking the Moon's mare were oceans of water.Courtesy NASAThree separate sources have confirmed finding water on our Moon, according to a report in the journal Science. Although the Moon is still much dryer than any desert on Earth, the possibility of extracting water from the lunar surface could provide astronauts with a source of drinking water and fuel.