Other works

(novel) "Timescape". New York: Simon & Schuster, 1980. ISBN 0671253271

(novel) "Across the Sea of Suns". Ultramarine Publishing Company, 1984. ISBN 0671446681

(novel) "Against Infinity". Ultramarine Publishing Company, 1983. ISBN 0671464914

(book editor, with Martin Greenberg) "What Might Have Been, Volume 1: Alternate Empires". Spectra, 1989. ISBN 0553278452

(book editor, with Martin Greenberg) "What Might Have Been, Volume 2: Alternate Heroes". Spectra, 1989. ISBN 0553282794

(book editor, with Martin Greenberg) "What Might Have Been, Volume 3: Alternate Wars". Spectra, 1991. ISBN 0553290088

(book) "Artifact". New York: St. Martin's Press, 1985. ISBN 0312930488

(book) "Beyond Human: The New World of Cyborgs and Androids". Simon & Schuster, 2003. ISBN 1575001578

(novel) "Beyond Infinity". New York: Aspect, 2004. ISBN 044653059X

(novel) "Beyond the Fall of Night". New York: Putnam Publishing Group, 1990. ISBN 0399134999

(book) "Centigrade 233". New Castle, VA: Cheap Street, 1990.

(novel) "Cosm". New York: Eos, 1999. ISBN 0380790521

(book) "Deep Time: How Humanity Communicates Across Millennia". New York: Avon Books, 1999. ISBN 0380975378

(novel) "Eater". New York: Eos, 2000. ISBN 0380974363

(novel) "Find the Changeling". New York: Dell Publishing Co., 1980. ISBN 0440126045

(novel) "Furious Gulf". Spectra, 1994. ISBN 0553096613

(novel) "Great Sky River". Spectra, 1987. ISBN 0553052381

(book editor, with George Zebrowski) "Habitats in Space". Harcourt, 2002. ISBN 015600528X

(novel) "Heart of the Comet". Spectra, 1986. ISBN 0553051253

(book editor, with Martin H. Greenberg) "Hitler Victorious: Eleven Stories of the German Victory in World War II". New York: Garland Publishing, 1986. ISBN 0824086589

(novel) "If the Stars Are God". Spectra, 1988. ISBN 0553276425

(short story collection) "In Alien Flesh". New York: St. Martin's Press, 1986. ISBN 0312933444

(nove) "In the Ocean of Night". New York: Delacorte Press, 1977. ISBN 0803742185

(novel) "Jupiter Project". New York: E.P. Dutton, 1975. ISBN 0525664564

(novel) "The Martian Race". Aspect, 1999. ISBN 0446526339

(short story collection) "Matter's End". New Castle, VA: Cheap Street, 1991. ISBN 0941826201

(novel) "Sailing Bright Eternity". Spectra, 1995. ISBN 0553086553

(novel, with William Rotsler) "Shiva Descending". New York: Tor Books, 1992. ISBN 0812531833

(novel) "Shiva Descending-Can: Grassy Knoll". New York: Tor Books. ISBN 0812531841

(novel) "The Stars in Shroud". London: Sphere Books, 1979. ISBN 0722115717

(novel) "The Sunborn". New York: Aspect, 2005. ISBN 0446530581

(novel) "Tides of Light". Spectra, 1989. ISBN 0553053221

(novel) "Time's Rub". New Castle, VA: Cheap Street, 1984.

(novel) "Under the Wheel". Riverdale, NY: Baen Books, 1987. ISBN 0671656112

Column, "A Scientist's Notebook: A Portrait of Humanity," Published in "The Magazine of Fantasy & Science Fiction (USA)," Volume 95, No. 4 & 5 (Whole No. 567), October/November 1998.

Column, With Elisabeth Malartre, "A Scientist's Notebook: The Coming of the Cyborgs," Published in "The Magazine of Fantasy & Science Fiction (USA)," January 2002, Volume 102, No. 1 (Whole No. 602), Page 107-115.