Are you having a hard time coming up with a good idea for the science fair? Or do you just want to know how the world really works? Janice Van Cleave's A+ Projects in Astronomy can help you! This step-by-step guide explores 30 astronomy-related topics and offers dozens of ideas for experiments. Construct a scale model of the solar system; study eclipses; create a 'star clock'; and more! The book also includes charts, diagrams, and illustrations. 216 indexed pages, softcover.