"Asteroids come in all shapes and sizes--and hit our planet in them, too. But what happens if a catastrophically large one approaches earth? By looking on the ground at historical asteroid craters and present-day falls, and up into space for the big ones yet to come, a wide variety of scientists are trying to figure out how to track asteroids--and how to avoid devastating impacts in the future."--
Ages 10-12.|||Grades 4 to 6.|||1070L Lexile|||juvenile
Elizabeth Rusch ; photos by Karin Anderson.
Includes bibliographical references (pages 70-71) and index.
Accelerated Reader AR MG 7.2 2 192109.
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