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Term | Definition |
---|---|
Rotation | An object spinning on it axis |
Revolution | An object orbiting around an object |
How much is Earth's axis tilted | 23.5 degrees |
Geocentric | An Earth centerd Solar system |
Heliocentric | A sun centerd solar system |
Copernicus | The astronomer who came up with the heliocentric idea |
Ptolemy | Believed in the Geocentric Solar system |
Newton | Came up with gravity and inertia |
The planets in order | Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune |
Asteriod belt | Pieces of rocks between Mars and Jupiter |
Comet | Piece of ice that takes an ireguler orbit around the Sun. |