Labrecque, Ellen creator author text directory mnu 2021 2021 monographic eng 32 pages : colour illustrations, colour photographs ; 24 cm. "What are asteroids, comets, and meteors made of? What can scientists do if an asteroid is headed toward Earth? Learn how astronomers prepare for space objects hitting Earth, from tracking them to building asteroid-hunting telescopes. Budding astronomers will learn all about meteors, asteroids, and comets, including the history of asteroids hitting Earth and the differences between space rocks"-- Smashing into Earth Defending planet Earth Asteroids Meteoroids, meteors, and meteorites Comets From far away What is still a mystery?. BY ELLEN LABRECQUE. Includes bibliographical references (page 31) and index. Asteroids Juvenile literature Meteors Juvenile literature Comets Juvenile literature 523.5 9781496687166 PPAK 221218 20250305160623.0 eng