Titan

Here is Titan: the alien that is, itself, a world. Here is Titan: the heralded new novel by SF's most spectacular new talent, the Hugo and Nebula Award winner who has been compared by Isaac Asimov with the early Heinlein. Here it Titan: the story of a journey though the awesome interior of a moon-sized being that leads to an encounter with a vast and lonely intelligence. And a proposal.