"Researchers determined that the lunar water likely originated early in the moon's formation history, suggesting that it is, in fact, native to the moon," reports the Christian Science Monitor. "They also think that the water, which is locked up in lunar rocks and material, is likely more widespread in the moon's interior than previous studies estimated. These findings now suggest that the lower limit for total water on the moon could be 100 times greater. 'When the rocks were first returned from the Apollo missions, it was pretty obvious that they were really dry,' Francis McCubbin, lead author of the study, told SPACE.com. 'A lot of people attributed the dry nature to something fundamental about how the moon formed.'"