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Space Rocks
| Term | Definition |
|---|---|
| Solar System | the Sun and everything that moves around it because of the Sun’s gravity. |
| Galaxy | a huge collection of stars, planets, gas, dust, and dark matter that are all held together by gravity. |
| Universe | everything that exists — all space, time, matter, and energy. |
| Asteroid | a rocky object that orbits the Sun |
| Asteroid Belt | a wide region of space between Mars and Jupiter where most of the solar system’s asteroids are found. |
| Comet | a small object made of ice, dust, and rock that orbits the Sun. |
| Meteoroid | a small piece of rock or metal that travels through space. |
| Meteor | when a meteoroid enters Earth’s atmosphere and burns up |
| Meteorite | when the meteor reaches the ground without burning up completely |