SCIENCE
(3) 4-6 Science Concepts series. In this well-designed volume, the authors summarize astronomers' present understanding of the structure of the universe and Earth's place in it. Included in the discussion are details about the observations and the reasoning that led to this current picture. Photographs, illustrations, and diagrams, are effectively captioned. Sidebars contribute additional information. Reading list, "Space Age" timeline, websites. Glos., ind.

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