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: -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-3: -The period of the comet’s orbit is 90days. Some statements are given regarding the collision between the comet and the earth.

Detailed explanation-4: -You may know that planets move in elliptical orbits around their sun. An ellipse is a shape that is like a narrow circle. Comets move in very narrow and stretched out ellipses. They sometimes cross the orbits of several planets on their trip around their sun.

Detailed explanation-5: -But when a comet gets close to the Sun, it starts heating up. Eventually, the ice begins to turn to gas. This can also cause jets of gas to burst out of the comet, bringing dust with it. The gas and dust create a huge, fuzzy cloud around the nucleus called the coma.