Perihelion Science Fiction is an American online science fiction magazine specializing in hard science fiction. The first issue was published November 12, 2012, and it has maintained a regular monthly update schedule since. Perihelion has published fiction by authors such as Joseph Green, Ken Liu, Aliya Whiteley, and Steve Stanton, including articles by National Press Club member John A. McCormick and comic strips by Christopher Baldwin and John Waltrip.