|a"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."--|cProvided by publisher.
|aGrades 4 to 6.
|aAsteroids|xCollisions with Earth|vJuvenile literature.
Asteroids bombard our atmosphere all the time. Some are harmless, burning up in a flash of light. But others explode with a great sonic boom, smashing windows and throwing people to the ground. Worst of all, some asteroids strike our planet, blasting out massive craters and destroying everything nearby on impact. Follow the award-winning author Elizabeth Rusch into the field with scientists as they search for dangerous asteroids in space, study asteroids that have smashed into the ground, and make plans to prevent an asteroid strike if one ever threatens our planet.