What Is a Meteor?
4. Meteoroids
As rocks as large as asteroids go hurtling through space at very high speeds, it is inevitable that some will end up colliding with each other. When this does happen, smaller chunks of the rock will be broken off, and these smaller chunks are known as meteoroids.
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It is these chunks that usually enter into our atmosphere and create meteors. It is these collisions that sometimes send meteoroids and other debris on a collision course with our planet. As well as coming from asteroids, meteoroids will also sometimes come from comets. In order to be classified as a meteoroid, rocks will need to be less than a meter across.
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