It will examine neutrons (the electrically neutral components of atomic nuclei) that are ejected from the lunar surface after being bombarded by cosmic rays (energetic particles that constantly streak through space).

ECONOMIST: Divining water

The fact that they surface with some regularity is a source of delight to the neutral, less so to those who come out on the losing side.

WSJ: Last-Second Soccer Magic Lifts Doncaster to Promotion