Forty Thousand in Gehenna, alternately 40,000 in Gehenna, is a 1983 science fiction novel by American writer C. J. Cherryh. It is set in her Alliance-Union universe between 2354 and 2658, and is one of the few works in that universe to portray the Union side; other exceptions include Cyteen (1988) and Regenesis (2009). The book was first published in a limited hardcover edition in 1983 by Phantasia Press, followed by a mainstream paperback release in 1984 by DAW Books. It was nominated for the Locus Award for Best Science Fiction Novel in 1984. Forty Thousand in Gehenna was reprinted in 2008 along with Cherryh's novel Merchanter's Luck (1982) in an omnibus volume entitled Alliance Space. Source: Wikipedia (en)