SOLAR SYSTEM

Detailed explanation-1: -EXPLANATION: According to Kepler’s first law, all the planets revolve around the Sun in elliptical orbits. The Sun is situated at one of the foci of these elliptical orbits.

Detailed explanation-2: -For example, the Sun is at one of the foci of Earth’s elliptical orbit.

Detailed explanation-3: -As per Kepler’s law, Earth revolves around the sun in elliptical orbits in which the Sun is at one focus of the orbit and nothing at the other focus.

Detailed explanation-4: -Since the planets exert gravity on the Sun, both the Sun and planets move around each other with the center of mass at the focus, but since the Sun accounts for 99.9% of the mass of the solar system, the Sun is basically one of the foci.

Detailed explanation-5: -Kepler’s first law states that a planet will orbit the sun in an eliptical shape, and that this orbit will have two focus points: internal points that help determine the shape of an ellipse. The distance from one focus to any point on the ellipse and then back to the second focus is always the same.