 Orphans of the Helix

"Orphans of the Helix" is a 46-page science fiction short story by American writer Dan Simmons, set in his Hyperion Cantos fictional universe (one of three, the others being "Remembering Siri", a story which is also a chapter of "Hyperion", and "The Death of a Centaur", which deals with an early and allegorical version of either "The Fall of Hyperion" or "Endymion").It was first published in the anthology "Far Horizons" in 1999.