The search for water (in the form of ice) under the surface of the moon is moving into a new stage.
NASA plans to crash two probes into the southern polar regions of the moon in an effort to find ice underground. A previous probe detected hydrogen in those craters, and scientists now want to see if that hydrogen is bound up as water.
For a long time, there has been a hope that water, discovered on the moon, would remove one of the main problems with establishing a long-term settlement there. Transporting water from Earth to a colony on the moon would be a prohibitively expensive. Much better to get it once you are there.
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