SCIENCE
Willett, Edward

Comets, Stardust, and Supernovas

(4) 4-6 Science@Work series. This book introduces physical and astronomical facts and concepts, including discussion of Earth's and the moon's orbits, space exploration, the sun and the planets in our solar system, stars, galaxies, and black holes. Some ambiguities and a few factual errors detract from the generally accurate presentation. The accompanying photographs and diagrams are adequate. Bib., glos., ind.

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