Yeah, I am aware of them, but most are entirely theoretical, the most interesting one I saw and it came out while I was studying was one where they used the Galileo to analyze near infrared and from there study the rock composition and they believe they found granite which can only form under large amounts of water. But, I haven't seen studies where that discovery has been corroborated with different methods

Okay, I guess we just need to wait for geological samples to be sure then ^^;