The title tells the story here. This is the sort of vigorous text useful for the junior or Senior High library shelf as well as for the private library of those for whom astronomy is the siren call. Beginning with a visit to an observatory, in which the reader is given the feeling of what participating in a scientific investigation of the planet Mars is really like, the history of astronomy is set down with emphasis on the development of the instruments. The several branches of astronomy -- celestial mechanics, astrophysics, etc., are explored, as well as more specific and earthbound details concerning career possibilities. An extremely sane approach, with a word about difficulties as well as great moments, and the author's enthusiasm brightens the pedantic prose. With the spell-binding photographs, this is a must for the career and science shelf.