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Which of the following statements best describes Kepler's law of ellipses?

Each planet orbits the sun in an elliptical shape with the sun at one of the ellipse's two focal points.
An ellipse has two focal points. The sun is at one focal point of an ellipse. The other focal point is the planet that orbits the sun.
The planets orbit the sun in a perfect circle. The sun is an elliptical shape.
Planets must orbit the sun in an elliptical shape because an ellipse has two focal points.

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The answer is "Each planet orbits the sun in an elliptical shape with the sun at one of the ellipse's two focal points." The first option refers to Kepler's First Law which contradicts Ptolemy and Copernicus' assumption that orbits are "perfectly" shaped. In Kepler's concept of the ellipse, planets orbit in an elliptical path with the sun at one of the two focal points since the other focus is empty.

Answer : Each planet orbits the sun in an elliptical shape with the sun at one of the ellipse's two focal points.

Explanation:

Kepler's Law of ellipses: This law explains the path of the planet around the sun

The orbit of the planet around the sun is an ellipse shape, where sun is present on the one of the focus.

From the given options the correct option is:

Each planet orbits the sun in an elliptical shape with the sun at one of the ellipse's two focal points.

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