Lot of 11 Hardcover books that are ex-library. These are hard to find! Titles included: Index Mysteries of Deep Space A Distant Puzzle: The Planet Uranus Nearest the Sun: The Planet Mercury Star Cycles: The Life and Death of Stars Global Space Programs The 21st Century in Space Modern Astronomy Astronomy Projects Science Fiction: Visions of Tomorrow Cosmic Debris: The Asteroids This is the updated version with copyright from 1994-1996