After the time of the first books, Pern undergoes a technological revival engendered by the rediscovery of the Admin AI built by the original colonists. An ambitious plan to eliminate Thread forever (yeah, like that’s gonna happen) hinges on time travel and blowing up engines on the Red Star.
Jaxom shrugged as he changed pages. “A dragon has to know exactly the time when he is going to, or he can come out of between at the same spot he’s inhabiting at that earlier time. Too close, and it is thought that both dragon and rider will die. Equally, it’s unwise to go any place you haven’t already been, so you shouldn’t go forward, because you wouldn’t know if you were there or not.”

Variants

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  1. All the Weyrs of Pern by Anne McCaffrey (Bantam Books, September 1991).
    2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Anne McCaffrey