Raft

Part of the Xeelee Sequence series

'Raft' is the first book in the astonishing 'Xeelee Sequence', Stephen Baxter's history of the universe. Five hundred years after a spaceship from Earth accidentally crossed through a hole in space-time to another - and very strange - universe, the crew's descendants still struggle for existence on the Raft, a structure built form the wreckage of the ship. A small group of scientists preserve the ancient knowledge which makes survival possible.

But now they must contemplate a journey even more perilous and fantastic than that of their ancestors, or die.