SOLAR SYSTEM

Detailed explanation-1: -Kepler’s First Law: each planet’s orbit about the Sun is an ellipse. The Sun’s center is always located at one focus of the orbital ellipse. The Sun is at one focus. The planet follows the ellipse in its orbit, meaning that the planet to Sun distance is constantly changing as the planet goes around its orbit.

Detailed explanation-2: -Orbits are eliptical because of Newtons Law of Gravity (bodies attract each other in proportion to their mass and inversly proportional to the square of the distance between them).

Detailed explanation-3: -We call the shape of the Earth’s orbit, elliptical. This means it is shaped like an ellipse. An ellipse is a circle which has been squashed or flattened a bit. All 8 planets in our Solar System travel around the Sun in elliptical orbits.

Detailed explanation-4: -In astrodynamics or celestial mechanics, an elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity equal to 0.