Recent discoveries of water-rich lunar apatite are more consistent with the hydrous magmas of Earth than the otherwise volatile-depleted rocks of the Moon.

Russell notes that Ceres may even have a weak atmosphere due to recent hydrous activity from surface geysers, plumes, and/or fountains.

“Only about 3 percent of the old Noachian Martian surface has hydrous minerals; minerals that incorporated some water into their structure.