Did you know: There are earthquakes on the moon known as moonquakes. Footprints left on the moon by the Apollo astronauts will probably be visible for at least 10 million years. The Usborne Book of Space Facts has hundreds of fascinating facts that will help you understand our universe. You can find out about the different planets that make up our solar system, about asteroids, comets and meteors and about the life of stars. It shows you the position of the solar system in our galaxy, the Milky Way, and the Milky Way's position among the million of other galaxies. So get onboard, and get ready to blast into an outer world of adventure.