Informs us that only three hundred of the thousands of human-made objects in space are performing useful functions. Explains how dangerous space junk can be.
Garbage includes discarded rocket parts, disused satellites, and misplaced tools.
Many good photos and illustrations. Includes table of contents, glossary and index. Points out the discovery of Jupiter's moons, storms, ring, satellites, magnetic field and other information obtained from Pioneer and Voyager probes. Excellent photos and diagrams. Interesting facts and thought provoking questions.