Science Fiction satire/adventure published in 1991 novel by Larry Niven, Jerry Pournelle, and Michael Flynn. Near future/alternate future in which anti-technology forces control Earth, while a struggling colony survives in orbital space and on the Moon. Science fiction fans on Earth work to save downed astronauts. Contains new (2011) Retrospective Afterwords by Niven, Pournelle, and Flynn. Original cover by Steve Hickman used with permission.