At https://tallbloke.wordpress.com/2017/07/24/scientists-spy-new-evidence-o… … that scientists think they have found evidence of water in the interior of the Moon. The origin of water in the interior is a mystery – see https://phys.org/print420112878.html … is derived from satellite data and the idea water can be found in the interior of the Moon raises some interresting questions about the formation of the Moon, on the one hand, and how much water is in the solar system.
Water on the Moon
24 July 2017Astronomy