Discover fascinating facts about meteorites, pieces of asteroids that originate in outer space and survives their passage through the atmosphere to reach the ground.

Brief article examines what meteorites are, the different types, and where they came from.

Learn the difference between asteroids and comets, meteoroids and meteorites, and more!

What's the difference between a meteor, meteorite, and meteoroid, and exactly how scared should we be? Crash Course explains exactly what happens when earth encounters debris as it plows its course around the sun. [11:21]

NASA defines and explains meteors. Content includes a look at meteor showers.

Kids learn about comets and meteors in the science of astronomy including the coma and tail, meteorites, meteoroids, the Kuiper belt, and the Oort cloud.

"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...