ARTHUR C. CLARKE was the most celebrated science fiction author of the twentieth century, the author of more than sixty books, and the winner of all the field's highest honors. He coanchored the Apollo 11, 12, and 15 missions with Walter Cronkite and Wally Schirra for CBS. He died in 2008.
STEPHEN BAXTER is the author of many major SF novels. He has won the Philip K. Dick Award, the John W. Campbell Award, the British Science Fiction Association Award, the Lasswitz Award (in Germany), and the Seiun Award (in Japan).