Comets
Scientists believe that in the initial period of the formation of the solar system, with the leftover refuse of it these comets were formed. Comets were formed with the mixture of dust, rocks, carbon compounds and particles of ice. Any comets can be of an average diameter of 1 kilometer to 25 kilometers. In 1996, a tail-shaped comet named ‘Hailey’s’ diameter was measured to be up to 57 million kilometers. The length and shape of the orbits of the comets varies with the size and shape of the comet. To complete its one round in its orbit, comets take 100 years to 1 lakh years. Comets are seen as a sign of good or bad omen. Some famous comets are Halley, Shoemaker-Levi, and Hail Bopp, etc.
