SOLAR SYSTEM

Detailed explanation-1: -At the heart of every comet is a solid, frozen core called the nucleus. This ball of dust and ice is usually less than 10 miles (16 kilometers) across – about the size of a small town. When comets are out in the Kuiper Belt or Oort Cloud, scientists believe that’s pretty much all there is to them – just frozen nuclei.

Detailed explanation-2: -The solid, centrally located part of the comet is known as the “nucleus". The nucleus is a repository of dust and frozen gases. When heated by the sun, the gases sublimate and produce an atmosphere surrounding the nucleus known as the coma which is later swept into the elongated tail.

Detailed explanation-3: -The nucleus is a solid body typically a few kilometres in diameter and made up of a mixture of volatile ices (predominantly water ice) and silicate and organic dust particles. The coma is the freely escaping atmosphere… In comet: Cometary nuclei. …of materials then forms the cometary coma, the comet’s atmosphere.

Detailed explanation-4: -The solid, core structure of a comet is known as the nucleus. Cometary nuclei are composed of an amalgamation of rock, dust, water ice, and frozen carbon dioxide, carbon monoxide, methane, and ammonia.