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Basic Information

A meteoroid is a smallish (a meter or less in length) rock, mineral, or lump of metal, floating in outer space. They are smaller than an asteroid, but bigger than a micrometeoroid.

When a meteoroid enters the atmosphere of the Earth it is known as a meteor. The heating of entry can cause them to ignite into a bright and flaming bolide.

A meteoroid that has struck the earth is called a meteorite.

Meteoroids are often made of iron, iron-ore, or an iron-nickel alloy.



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