Risk and Exploration: Earth, Sea and the Stars By Dick, Steven J. & Keith L. Cowing eds. Books / Hardcover Transportation › Spaceflight Publisher: NASA, January 2005 Price $39.44 Free Shipping Send to a friend Used - Very Good Very Good condition. (space, science, space exploration, NASA, astronautics) $39.44 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.