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A comment on Ice confirmed at the Moon’s poles. Parent comment

Re:Ice confirmed at the Moon’s poles by accrual on Tuesday August 21, 2018 @10:54PM (#17815900)
Water is also effective at blocking radiation [0][1], making it especially useful when stored around the spacecraft occupants.

[0] https://www.quora.com/Can-we-use-water-or-ice-as-radiation-s...

[1] https://www.nasa.gov/pdf/284275main_Radiation_HS_Mod3.pdf (page 4)

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