Ring (The Xeelee Sequence)

Michael Poole's wormholes constructed in the orbit of Jupiter had opened the galaxy to humankind. Then Poole tried looping a wormhole back on itself, tying a knot in space and ripping a hole in time. It worked. Too well. Poole was never seen again. Then from far in the future, from a time so distant that the stars themselves were dying embers, came an urgent SOS—and a promise. The universe was doomed, but humankind was not. Poole had stumbled upon an immense artifact, light-years across, fabricated from the very string of the cosmos. The universe had a door. And it was open... Harry Harrison "Arthur C. Clarke, Isaac Asimov, Robert Heinlein...now Stephen Baxter joins their exclusive ranks!" -- New Scientist From back cover Harper paperback June 1996: Michael Poole's *wormholes* constructed in the orbit of Jupiter had opened the galaxy to humankind. Then Poole tried looping a wormhole back on itself, tying a knot in space and ripping a hole in time. It worked. Too well. Poole was never seen again. Then from far in the future, from a time so distant that the stars themselves were dying embers, came an urgent SOS -- and a promise. The universe was doomed, but humankind was not. Poole had stumbled upon an immense artifact, light-years across, fabricated from the very *string* of the cosmos. The Universe had a door. And it was open.... When Michael Poole loops a wormhole back on itself, tying a knot in space and ripping a hole in time, he is sent to a time so far in the future that the stars are dying embers and stumbles on an immense artifact, fabricated from the very strings of the cosmos Even at the moment she was born she knew something was wrong.