This illuminating activity book introduces youngsters to Galileo's revolutionary discoveries in astronomy and physics. Activities include playing with gravity and motion, making a pendulum, observing the moon, and painting with light and shadow. Includes a time line, glossary, and Web sites.

Richard Panchyk is the author of Archaeology for Kids and the coauthor of Engineering the City. Both of his grandfathers and three of his great-uncles were soldiers in World War II. He lives on Long Island in New York. Buzz Aldrin PhD was one of the first two humans to walk on the moon during the Apollo 11 landing of 1969. Since retiring from NASA, he has devoted himself to ensuring the continuation of manned space exploration. He lives in Los Angeles, California.