2020年10月26日 星期一

Looks Like The Moon Has Water All Over The Place

NASA's SOFIA Discovers Water on Sunlit Surface of Moon, NASA

"NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) has confirmed, for the first time, water on the sunlit surface of the Moon. This discovery indicates that water may be distributed across the lunar surface, and not limited to cold, shadowed places. SOFIA has detected water molecules (H2O) in Clavius Crater, one of the largest craters visible from Earth, located in the Moon's southern hemisphere. Previous observations of the Moon's surface detected some form of hydrogen, but were unable to distinguish between water and its close chemical relative, hydroxyl (OH). Data from this location reveal water in concentrations of 100 to 412 parts per million - roughly equivalent to a 12-ounce bottle of water - trapped in a cubic meter of soil spread across the lunar surface."

Keith's note: I asked Jacob Bleacher: "Now that water seems to be a ubiquitous resource, one would think that the polar focus might pivot. Are you reconsidering landing sites as a result of this discovery? Up until now the Artemis program has put forth a persistent mantra about focusing human landings at the lunar south pole due to potential water resources. It has been polar, polar, polar." Bleacher replied that sunlight access more than half the time is also being sought in terms of power and you get that at the poles. "Water is one resource on the lunar resource but it is not the only resource - right now we are still focused on south polar region."



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