CRaTER scans found an increase in the proton emission at the Moon poles. Protons and neutrons, released from material below the surface, will collide with other atoms and produce the emission of secondary particles.The enhancement of secondary protons is consistent with the presence of hydrogen.

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CRaTER scans found an increase in the proton emission at the Moon poles. Protons and neutrons, released from material below the surface, will collide with other atoms and produce the emission of secondary particles.The enhancement of secondary protons is consistent with the presence of hydrogen.