Alternate Realities is a 2000 omnibus collection of three short science fiction novels by American writer author C. J. Cherryh: Wave Without a Shore (1981), Port Eternity (1982), and Voyager in Night (1984). All three novels are set in Cherryh's Alliance-Union universe and share a common theme of people encountering and coping with a reality different from their own. The original books as well as the omnibus edition were all published by DAW Books. The novels are what Cherryh and her publisher at DAW, Donald A. Wollheim, referred to as "magic cookie" books. Such works explore unusual themes and ideas in science fiction, and can in some sense be seen as thought experiments. Wollheim encouraged Cherryh to experiment in this way during the late 1970s and early 1980s because he felt that the science fiction market would support such unusual offerings at the time.One consequence of this approach is that the original novels were therefore short by contemporary standards, each having only approximately 90,000 words. The relative brevity of the books facilitated DAW's release of the omnibus edition in 2000. Source: Wikipedia (en)