Just came by pictures of Saturn's planet like moon Titan. Pictures taken by the Huygens probe. They say Titan(the size of Mars) is almost like early earth. Titan includes mountains and sand. It also had methane oceans and lakes. Scientists have observed waves during investigations of the moon. Under a lower layer of ice are oceans of salt water. Titan's atmosphere is the only nitrogen-rich atmosphere in the solar system aside from Earth's. 5 billion years from now when the sun expands, they say Titan will heat up and be basically a copy of Earth now. Eventually they said they are going to send a rover and a mobile ocean probe. Will be awesome to get clear shots like the recent ones from Mars.