A lively, informative gathering of space knowledge, attractively illustrated by Clifford Geary, and with straight from the shoulder answers to a lot of puzzlers. What's the difference between a ""space opera"" and good science fiction? Where does space begin? How does a rocket work? What will be obstacles in life on a space station? Do we really know about life on Mars? In well organized material on the implications of space travel,- the nature of space, the moon and the other planets, laws of motions, escape velocity- are simplified to as near as possible answers in terms of what scientists know and can guess. Buy it! Good as indoctrination material for adults too.