SOLAR SYSTEM

Detailed explanation-1: -Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion. Like all orbiting bodies, comets follow Kepler’s Laws-the closer they are to the Sun, the faster they move.

Detailed explanation-2: -Most comets travel in highly elliptical orbits around the Sun with orbital periods (time between returns) ranging from just over three years to millions of years.

Detailed explanation-3: -The gravitational force between the Sun and the other components of the solar system such as the planets, asteroids, comets, etc., causes them to revolve around the Sun.

Detailed explanation-4: -Comets with very eccentric elliptical orbits arrive in the inner solar system from the Oort Cloud-a region thousands of astronomical units (AU, the Earth-Sun distance) away.

Detailed explanation-5: -Because of conservation of angular momentum, the speed of the comet is highest at its closest position to the Sun. A comet moves in an elliptical orbit around the Sun.