Source 1
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2993.html?foxtrotcallback=trueSource 2
https://www.livescience.com/59917-moon-interior-could-have-water.htmlQuote (source 1)
Laboratory analyses of lunar samples provide a direct means to identify indigenous volatiles and have been used to argue for the presence of Earth-like water content in the lunar interior. Some volatile elements, however, have been interpreted as evidence for a bulk lunar mantle that is dry. Here we demonstrate that, for a number of lunar pyroclastic deposits, near-infrared reflectance spectra acquired by the Moon Mineralogy Mapper instrument onboard the Chandrayaan-1 orbiter exhibit absorptions consistent with enhanced OH- and/or H2O-bearing materials
Quote (Source 2)
Previous studies have observed traces of water ice in shadowed regions at the lunar poles. However, this water is likely the result of hydrogen that comes from solar wind, according to the new study's lead author, Ralph Milliken, a geologist at Brown University. The new research reveals there is likely a large amount of water in the moon's mantle, as well. This suggests that the water was delivered to the moon very early in its formation, before it fully solidified
It would be amazing to find some kind of microbial primordial life inside the moon...