Tag Archives: solar wind

Source of the Moon's water

Remember how NASA's M3 instrument on ISRO's Chandrayaan-1 spacecraft confirmed the sparse existence of water all over the surface of the Moon? One of the speculations was that the water formed as protons, which are basically hydrogen atoms without electrons, combine with the oxygen in lunar rock. And it seems that this is indeed the case as the ESA's SARA instrument on the same spacecraft had collected data showing that a substantial number of protons in the solar wind are being absorbed by the lunar regolith.

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