Kepler discovered

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(C) Johannes Kepler formulated three fundamental laws that describe the motion of planets around the Sun. These are known as Kepler's laws of planetar

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Laws of planetary motion

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(C) Johannes Kepler formulated three fundamental laws that describe the motion of planets around the Sun. These are known as Kepler's laws of planetary motion. $1$. The Law of Orbits: All planets move in elliptical orbits with the Sun at one of the foci. $2$. The Law of Areas: $A$ line that connects a planet to the Sun sweeps out equal areas in equal times. $3$. The Law of Periods: The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. Therefore,the correct option is $C$.

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