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A planetary year is the length of time it takes that planet to revolve around the sun. The planets revolve around the sun in different amounts of time, so a “year” on each planet is a different amount of time. The farther a planet is from the sun, the longer its year.
| Planet | Year |
|---|---|
| Mercury | 87.96 Earth days |
| Venus | 224.68 Earth days |
| Earth | 365.26 Earth days |
| Mars | 686.98 Earth days |
| Jupiter | 11.862 Earth years |
| Saturn | 29.456 Earth years |
| Uranus | 84.07 Earth years |
| Neptune | 164.81 Earth years |
| Pluto (a dwarf planet) | 247.7 Earth years |