Describes the role that collisions with meteors, comets, and asteroids have played in the history of Earth and other planets in the solar system and examines what is being done to protect Earth from future collisions.

Explores the mysteries of rocks that travel vast distances through space, sometimes passing through Earth's atmosphere and sometimes landing on the surface.

"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."--

Middle schooler Liberty likes to make her own maps of the stars, in fact she is obsessed with them, especially since her family is falling apart; her parents are getting divorced, her nine-year-old sister will barely leave the house and carries a stuffed tiger at all times, her father is suffering from depression, but will not talk about it, and the brothers down the street, once friends, have turned into bullies--so when a tiny meteorite literally...