How Do Meteors/Asteroids Form?
First to clarify terminology a little bit — a “meteor” is a bit of rock or metallic stuff that has entered Earth’s atmosphere and glows brightly as it falls downward. A “meteoroid” is one of those bits of rock or metallic stuff drifting in space. An asteroid is just a very large meteoroid. Asteroids are mostly left over material from billions of years ago when our solar system was first forming. They just never got large enough to form into spherical planets. Meteoroids are the same stuff, with some of them broken off chunks of asteroids that have collided.
