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2017., Ages 9-13; Grades 4 to 6, Houghton Mifflin Harcourt Call No: J SPAC 551.3 97 Availability:1 of 1 At Your Library Series Title: Scientists in the field.Summary Note: "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."--