I watched this awsome documentry about life of space, univerce etc, and it was saying about in 7 billion years in time earth will be melted into the sun and so with other planets in time, which sun expands but they said something about some ice world that as it get closer to the sun it'll start to melt and become a "water world" ..as may life could begin there with a whole new world like earth..

Yeah, that possibility exists, but I prefer not to wait too long.