The Sirens of Titan

But at least, as a consolation, he now knows everything that has ever happened and everything that ever will be. He knows, for instance, that his wife is going to Mars to mate with Malachi Constant, the richest man in the world. He also knows that on Titan - one of Saturn's moons - is an alien from the planet Tralfamadore, who has been waiting 200,000 years for a spare part for his grounded spacecraft ...