How Long Do The Planets Take To Go Around The Sun?
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There is a tremendous variation among the planets in the time it takes to complete a single revolution around the sun. For planets that are closer to the sun than Earth is, a year is shorter than an Earth year; for planets that are farther from the sun than Earth is, a year is longer than an Earth year.
|Planet||Period of revolution|
|Earth days||Earth years|
Sources: The Guinness Book of Answers, 8th ed., p. 13; Pasachoff, Jay M. Contemporary Astronomy, p. A6.
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