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Asteroids, Etc.
Astronomy study stack
Term | Definition |
---|---|
Asteroid | A large object in space that obits the sun-smaller than planets and composed of rock and metal |
Comet | Chunks of ice and dust travelling through the solar system. They orbit the sun in a long elliptical trail |
Meteoroid | A rocky object that orbits the sun-much smaller than asteroids. They are often composed of nickel and iron. (most are about the size of a pebble) |
Meteor | A meteoroid that has entered earth's atmosphere. produces a streak of light in the sky, often referred to as a shooting star. |
Meteorite | A meteor that has hit or landed on earth's surface. Most meteorites are made up of stone and iron. |
Structure of a Comet | Nucleus, Coma, Tail |