SOLAR SYSTEM

Detailed explanation-1: -Comets are cosmic snowballs of frozen gases, rock, and dust that orbit the Sun.

Detailed explanation-2: -Comets are collections of rocky material and ices, sometimes referred to as “dirty snowballs”. One of their key features is their large abundance of so-called “volatile” compounds, things like carbon dioxide, water and noble gases that sublimate (change from solid to gas) very easily.

Detailed explanation-3: -Comets are frequently called “dirty snowballs” because they consist of mostly water ice, peppered with rocky debris and frozen gases.

Detailed explanation-4: -Meteoroids are what we call “space rocks” that range in size from dust grains to small asteroids. This term only applies when they’re in space. Most are pieces of other, larger bodies that have been broken or blasted off. Some come from comets, others from asteroids, and some even come from the Moon and other planets.

Detailed explanation-5: -Herschel has long been credited with coining the term asteroids, derived from a Greek word meaning “starlike, ‘’ because he introduced the term at a meeting of London’s Royal Society in May 1802 and later published it in the Society’s Philosophical Transactions.