SOLAR SYSTEM

Detailed explanation-1: -Which of the following best describes a comet? It is made of ice, rock, and dust. Comets are leftover fragments from the time when planets formed in the solar system.

Detailed explanation-2: -Comets have been called “dirty snowballs.” They are small celestial objects, made of ice, gas, dust, and a small amount of organic material, that orbit our Sun.

Detailed explanation-3: -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. The nucleus of a comet is usually around 6 miles (10 kilometers) across or less (opens in new tab).

Detailed explanation-4: -Comets are large objects made of dust and ice that orbit the Sun. Best known for their long, streaming tails, these ancient objects are leftovers from the formation of the solar system 4.6 billion years ago.

Detailed explanation-5: -Some of these newly formed balls of dust and ice compacted into rock and remained small, becoming asteroids. But some of these formations continued to gather debris and material, growing ever larger in size.