The view that Earth’s moon is a dried out, desolate world may be all wet.

A new analysis of data from the Indian Space Research Organization’s Chandrayaan 1 orbiter, which operated at the moon from 2008 to 2009, has revealed what researchers say is definitive proof of water ice exposed on the lunar surface. Gathered by NASA’s Moon Mineralogy Mapper (M3) spectrometer onboard the Indian probe, the data all but confirm extensive-but-tentative evidence from earlier missions hinting at water ice deposits lurking in permanently shadowed craters at the moon’s poles. Such deposits could someday support crewed lunar outposts while also revealing previously hidden chapters of the moon’s history. The results appeared in a study published August 20 in Proceedings of the National Academy of Sciences.

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