Translations:Dictionary:Kepler’s laws/1/en

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{{#category_index:K|Kepler’s laws}} First law: Every planet follows an elliptical path with the Sun at one focus. Second law: A line from the center of the Sun to the center of a planet sweeps the same area in the same time; hence the planet travels fastest when closest to the Sun. Third law: The square of the period of revolution of a planet is proportional to the cube of its mean distance from the Sun.