> > There was also a very intriguing time travel story in one of those books by Frederick Pohl. (Or it may have been Poul Anderson). The inventor created a time machine that could only travel *forward* in time, [...] In the end, he found out that time is cyclical as he went beyond the death of the universe and then witnessed the birth of a "new" one, only to keep going and discover that he had started over and the "new" universe was identical to his old one. So he made it home after all, in a roundabout fashion.

The story is "Flight to Forever" by Poul Anderson.