SOLAR SYSTEM

Detailed explanation-1: -Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the Sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet.

Detailed explanation-2: -The comet nucleus is the dirty snowball that is essentially the entire comet when it is frozen and far from the Sun. The coma is a large, dusty atmosphere surrounding the nucleus, made up of sublimated gas mixed with dust.

Detailed explanation-3: -The coma is a cloud of gases that surrounds the nucleus of a comet. In some comets, a cloud of hydrogen gas surrounds the coma. This hydrogen cloud may be as big as 3 million kilometers (about 2 million miles) across.

Detailed explanation-4: -The roughly potato-shaped, 9-mile-long (15 km) comet contains equal parts ice and dust, with some 80% of the ice made of water and about 15% of it consisting of frozen carbon monoxide.

Detailed explanation-5: -Comets are frequently called “dirty snowballs” because they consist of mostly water ice, peppered with rocky debris and frozen gases.