Larry Niven Robert A. Heinlein Joe Haldeman Greg Bear Stephen Baxter Gregory Benford John Varley James P. Hogan Peter F Hamilton Greg Egan David Brin Jerry Pournelle Alastair Reynolds Iain Banks Vernor Vinge Roger Zelazny David Weber Spider Robinson Arthur Clarke Ben Bova Frederick Pohl Dan Simmons David Drake Piers Anthony Harry Turtledove Lois Mcmaster Bujold Gene Wolfe Jack Vance Kim Stanley Robinson Anne Mccaffrey Alan Dean Foster Frederik Pohl Timothy Zahn Neal Asher David Gerrold Richard Morgan Andre Norton Robert Silverberg Mark Twain John Ringo Alfred Bester S.M. Stirling Robert Anton Wilson Harlan Ellison Christopher Moore Eric Flint Joseph Heller Charles Sheffield John Barnes