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Solar planets
| Term | Definition |
|---|---|
| Mercury | Closest planet to the sun Not the hottest so it lacks gravity and atmosphere |
| Venus | Hottest planets Green house effect Day is longer then a year rotation time is longer then its revolution Acid clouds |
| Earth | Only planet with known life s Moderate temperatures Protective atmosphere Liquid water |
| Mars | Largest known mountain olympus mons Possible signs of life |
| Terrestrial planets | The four inner planets |
| Green house affect | Occurs when a planet’s atmosphere traps solar energy and cause the temperature to increase |
| Jupiter | Largest planet |
| Saturn | Most complex ring system least dense planet it would float |
| Uranus | Rotation axis is tilted 90 degrees so rotates like a bowing ball |
| Galilean moons | 4 moons Galileo discovered around Jupiter |