Definition, Meaning & Synonyms
comet
Noun
/ˈkɒm.ɪt/
Definition
A comet is a small celestial body made of ice, dust, and gas that, when it approaches the sun, develops a glowing coma and a tail due to the sublimation of its icy components.
Examples
- Halley’s Comet is one of the most famous comets and is visible from Earth approximately every 76 years.
- When a comet orbits the sun, it can create a bright tail that can stretch millions of kilometers into space.
- Scientists study comets to learn more about the early solar system and the origins of water on Earth.
Meaning
Comets are often referred to as ‘dirty snowballs’ because they consist predominantly of water ice and rocky materials. They travel through the solar system and can become visible from Earth when they come close to the Sun, creating a spectacular display in the night sky.
Synonyms
- None (specific astronomical term)
