Christopher Mari is the author of Ten Worlds Away, a short story collection, and The Beachhead, an Amazon Book of the Month selection. He is also the coauthor of Ocean of Storms, a bestselling sci-fi thriller he wrote with Jeremy K. Brown. He has edited biographies and history books for students, as well as three volumes on space exploration. His nonfiction has appeared in America, Boing Boing, Current Biography, Dappled Things, The Horn Book and the New York Daily News, among other publications. Visit him at christophermari.com.