Photo art: NASA/JPL-Caltech

Science marches on.  New studies of lunar material might call into question the collision theory of lunar formation.  If a Mars sized object struck the Earth early in it’s history, then today’s Moon might be too wet.

It’s odd to think of the Moon as too wet, or indeed, to think of it as wet at all.  Recent discoveries have indicated there is a lot of water there.  Some very recent work has indicated, however, that the Moon may be too wet!