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7.9B Vocab
| Term | Definition |
|---|---|
| Satellite | a natural or artificial body that revolves around a celestial body that is greater in mass |
| Solar nebula | a rotating cloud of gas and dust from which the sun and planets formed |
| Gravity | a force of attraction between objects that is due to their masses and that decreases as the distance between the objects increases |
| Mass | a measure of the amount of matter in an object |
| Orbit | the path that a body follows as it travels around another body in space |
| Solar system | the sun and all of the planets and other bodies that travel around it |
| Elliptical | a path that is oval in shape |
| Revolution | one complete orbit is a revolution |
| Rotation | the spinning of an object on an axis like a figure skater |