Hegira (novel)

Plot summary

In the novel, "young" humans (recreations of the medieval originals) are transported through the Big Collapse, at the end of time, to seed the next cycle of the universe. They are transported to Hegira, an artificial environment of the scale of the planet Jupiter, which has habitats for several species on its surface. The habitats are protected and uncoupled from the universe's entropy by means of force fields projected by giant obelisks. In the human realm, these are inscribed with the recorded history of humankind, sorted chronologically from the bottom up, including the science that went with it. People try to understand and copy what they can read on the obelisks, using balloons in some places to reach higher points on the obelisks.

A legend tells the protagonist that his beloved (frozen in stasis) will awaken if he goes on quest to the rim walls of the habitat, and he does so. On the way, he lands on an island with a good view of an obelisk (at least 1,000 mi (1,600 km) high) which is just tumbling down in the distance. Its fall causes a tsunami and devastates a continent. After the devastation, the inscriptions at the top of the fallen obelisk about human history are revealed. The hero's quest to the rim succeeds. He makes contact with an artificial intelligence guardian of Hegira, who tells him the story and advises him to go and populate the new universe since he has become part of the last one.

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