Talk:Game Principles/@comment-106.69.25.245-20140623151353/@comment-24951265-20140708145725

Oddly enough, water per se is not the huge issue - water can easily be made by burning hydrogen with oxygen, as long as you have those two items. Oxygen on the Moon is simple - it's like 40% or so of the crust. On an interstellar level, it's the third most common element. Hydrogen, on the other hand... now, that's not quite so simple. We'll have to get there to see if the deeper underlayers have retained more than the heavily irradiated upper layers have.