Comets, Asteroids and Meteors

What’s the difference between a meteor and a meteorite?
How are comets like dirty snowballs?
What would happen if an asteroid hit the Earth?
The books in the Astronaut Travel Guides take you on a virtual journey through our solar system, and beyond. Discover the facts about your destination, as well as information on what you need to take with you, and who you might choose to come along. You can even read exclusive interviews with a real astronaut and astronomer to learn tips for studying and living in space!