Skylab Explores the Earth (NASA SP-380) By Books / Hardcover Nature › Space Publisher: National Aeronautics & Space Administration, January 1977 Price $16.19 Free Shipping Send to a friend Collectible - Good First Edition First edition copy. Collectible - Good. Bookplate inside. Stamped on inside. (geophysics, skylab program, space photography, NASA) NOT AVAILABLE FOR SHIPMENT OUTSIDE OF THE UNITED STATES. $16.19 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.