BLOOMINGTON, Ind. (AP) - An Indiana University geologist who spent years studying lunar soils collected by the Apollo astronauts says NASA's discovery of water on the moon is "remarkable."
IU geologist Abhijit Basu says Friday's news that NASA spacecraft kicked up significant amounts of frozen water when they crashed into the moon last month raises questions about how it got there.
He says one theory is that solar winds lashing the moon over billions of years released oxygen from lunar soil that combined with hydrogen ions to form water.
Another theory is that comets collided with the moon, leaving behind water deposits.
Basu says the discovery of frozen water in the moon's permanently shaded polar craters could open the door to human colonization of the moon and beyond.
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