How big does a meteor have to be to make it to the ground?
If you’ve spent much time looking up at the night sky, you’ve probably seen some spectacular meteors and meteor showers. One of the most amazing things about these displays is that the majority of the space dust that causes visible meteors is tiny — between the size of a grain of sand and the size of a small pebble. Space Dust Image Gallery Discussing meteor activity can be tricky because the terminology is confusing. The term meteor actually refers to the streak of light caused by a piece of space debris burning up in the atmosphere. The pieces of debris are called meteoroids, and remnants of the debris that reach Earth’s surface (or another planet’s) are called meteorites. Meteoroids have a pretty big size range. They include any space debris bigger than a molecule and smaller than about 330 feet (100 meters) — space debris bigger than this is considered an asteroid. But most of the debris the Earth comes in contact with is “dust” shed by comet