SOLAR SYSTEM

Detailed explanation-1: -Nucleus: relatively solid and stable, center of the comet mostly ice and gas with a small amount of dust and other solids; 6. Coma: dense cloud of water, carbon dioxide and other neutral gases, surrounds the nucleus.

Detailed explanation-2: -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-3: -Scientists think that about 100 million comets orbit the Sun. A comet has a distinct center called a nucleus. Most astronomers think the nucleus is made of frozen water and gases mixed with dust and rocky material. Comet nuclei are described as dirty snowballs.

Detailed explanation-4: -Nucleus. A comet nucleus is the solid core of a comet consisting of frozen molecules including water, carbon monoxide, carbon dioxide, methane and ammonia as well as other inorganic and organic molecules-dust.

Detailed explanation-5: -A comet’s coma is the atmosphere of gas and dust around the nucleus of the comet.