H.G. Wells's seminal short story "The Time Machine," published in 1895, provided the springboard for modern science fiction's time travel explosion. Responding to their own fascination with the subject, the greatest visionary writers of the twentieth century penned some of their finest stories. Here are sixteen of the most exciting tales ever told, including: "Time's Arrow" In Arthur C. Clarke's classic, two brilliant physicists finally crack the mystery of time travel -- with appalling consequences. "Death Ship" Richard Matheson, author of Somewhere in time, unveils a chilling scenario concerning three astronauts who stumble upon the conundrum of past and future. "Yesterday was Monday" If all the world's a stage, Theodore Sturgeon's compelling tale follows the odyssey of an ordinary joe who winds up backstage. "Rainbird" R.A. Lafferty reflects on what might have been in this brainteaser about an inventor so brilliant that he invents himself right out of existence.;Yesterday was Monday / Theodore Sturgeon -- Time locker / Henry Kuttner -- Time's arrow / Arthur C. Clarke -- Death ship / Richard Matheson -- A gun for dinosaur / L. Sprague de Camp -- The man who came early / Poul Anderson -- Rainbird / R.A. Lafferty -- Leviathan! / Larry Niven -- Anniversary project / Joe Haldeman -- Timetipping / Jack Dann -- Fire watch / Connie Willis -- Sailing to Byzantium / Robert Silverberg -- The pure product / John Kessel -- Trapalanda / Charles Sheffield -- The price of oranges / Nancy Kress -- Another story or A fisherman of the inland sea / Ursula K. Le Guin.