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Sun earth moon
| Term | Definition |
|---|---|
| Satellite | A body that orbits a planet. |
| Star | A giant ball of superheated gas or plasma. |
| Planet | A round object that orbits the sun. |
| Meteor | A streak of light produced when a small piece of rock or ice known as a meteoroid burns up as it enters earth’s atmosphere. |
| Comet | A cold mixture of dust and ice that develops a long tail of light as it approaches the sun. |
| Constellation | A group of stars that represents a person, animal, or object. |
| Geocentric | An earth centered model. |
| Heliocentric | A sun centered model. |
| Ellipse | An oval shape. |