What is the difference between a meteor, a meteorite, a meteoroid and an asteroid? It’s all about location and size. Roughly speaking, an asteroid is a relatively small body (that isn’t a ...

About once a year, an automobile-sized asteroid hits Earth's atmosphere, creates an impressive fireball, and burns up before reaching the surface. Every 2,000 years or so, a meteoroid the size of ...

A meteoroid is a small rock, measuring anywhere between a grain of sand to a boulder, that breaks off from a comet or asteroid. These become a meteor when they vaporise in the Earth’s atmosphere.