Search Worlds Without End

Nebula and Sturgeon Award winning novelette. It originally appeared Asimov's Science Fiction, October-November 1996. The story can also be found in the anthologies The Year's Best Science Fiction: Fourteenth Annual Collection (1997), edited by Gardner Dozois, and Nebula Awards 33 (1999), edited by Connie Willis. It is included in the collections Beaker's Dozen (1998) and The Best of Nancy Kress (2015).

Humanity has expanded out into other solar systems using the remnants of an ancient technology of star gates. But now an alien race has also discovered the gates. In this situation, a new planet is discovered inhabited by a human-like race, and a team of scientists is sent to contact and study them. It isnt long before the killer aliens arrive and the whole powerkeg explodes.

A strange artifact has been discovered on a distant planet, an artifact that may be the key to humanity's salvation. For we at war with the Fallers, an alien race bent on nothing short of genocide, and this is a war we are losing. The artifact is not only a powerful weapon, but possibly the rosetta stone to a lost superscience . . . a superscience that the Fallers may have already decoded. Or it may be a doomsday machine that could destroy the very fabric of space.

Nancy Kress cemented her reputation in SF with the publication of her multiple-award-winning novella, "Beggars in Spain," which became the basis for her extremely successful Beggars Trilogy (comprising Beggars in Spain, Beggars and Choosers, and Beggars Ride).

And now she brings us Probability Space, the conclusion of the trilogy that began with Probability Moon and then Probability Sun, which is centered on the same world as Kress's Nebula Award-winning novelette, "Flowers of Aulit Prison." The Probability Trilogy has already been widely recognized as the next great work by this important SF writer.

In Probability Space, humanity's war with the alien Fallers continues, and it is a war we are losing. Our implacable foes ignore all attempts at communication, and they take no prisoners. Our only hope lies with an unlikely coalition: Major Lyle Kaufman, retired warrior Marbet Grant, the Sensitive who's involved with Kaufman Amanda, a very confused fourteen-year-old girl and Magdalena, one of the biggest power brokers in all of human space.

As the action moves from Earth to Mars to the farthest reaches of known space, with civil unrest back home and alien war in deep space, four humans--armed with little more than an unproven theory--try to enter the Fallers' home star system. It's a desperate gamble, and the fate of the entire universe may hang in the balance.