Ice confirmed at moon’s poles | 8/21/2018 | Deborah Byrd
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View larger. | Distribution of surface ice at moon’s south pole (l) and north pole (r), detected by NASA’s Moon Mineralogy Mapper instrument. Blue represents the ice locations. Gray scale corresponds to surface temperature (darker = colder areas, and lighter = warmer). The ice is concentrated at the darkest and coldest locations, in the shadows of craters. Image via NASA.

Space scientists have been speaking for years about the possibility of water ice preserved in shadowed craters at the moon’s poles. The presence of such ice raises the possibility of a formerly habitable moon, and also a moon we earthlings can inhabit as a platform for future solar system exploration. Today – August 21, 2018 – scientists at NASA announced the first direct observations providing definitive evidence of water ice at the moon’s poles. NASA said:

Ice - Deposits - Pole - Ice - Lunar

These ice deposits are patchily distributed and could possibly be ancient. At the southern pole, most of the ice is concentrated at lunar craters, while the northern pole’s ice is more widely, but sparsely spread.

The work was published in the peer-reviewed Proceedings of the National Academy of Sciences on August 20.

Shuai - Li - University - Hawaii - Brown

Shuai Li of the University of Hawaii and Brown University along with Richard Elphic of NASA’s Ames Research Center in California used data collected by NASA’s Moon Mineralogy Mapper (M3) instrument, which flew aboard Chandrayaan-1, India’s first mission to the moon, launched in 2008. The instrument provided the first mineralogical map of the lunar surface. In the new work, the researchers said they used M3’s data to identify:

… three specific signatures that definitively prove there is water ice at the surface of the moon.


They added that M3 was:

… uniquely equipped to confirm the presence of solid ice on the moon. It collected data that not only picked up the reflective properties we’d expect from ice, but...
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