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Which law validates the statement that ‘All the planets move around the sun in an elliptical orbit, with the sun being at rest at one focus of the orbit’?

Which law validates the statement that ‘All the planets move around the sun in an elliptical orbit, with the sun being at rest at one focus of the orbit’? Correct Answer Kepler’s First Law of Planetary motion

The correct answer is Kepler’s First Law of Planetary motion.

  • Kepler's laws of planetary motion published by Johannes Kepler between 1609 and 1619, describe the orbits of planets around the Sun.

Key Points

  • Kepler's laws of planetary motion state that all the planets move around the sun in an elliptical orbit, with the sun being at rest at one focus of the orbit.
  • Kepler published his first two laws about planetary motion in the year 1609 and the third law was published in 1619.
  • First Law states that the orbit of every planet is an ellipse with the Sun at one of the two foci.
  • According to the second law, the line joining a planet and the Sun sweep out equal areas during equal intervals of time.                                    
  • As per third law, the square of the time period of revolution of a planet around the sun in an elliptical path is directly proportional to the cube of its semi-major axis.

 

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