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How do comets work?
Quick answer
A comet is a chunk of ice, dust, and rock that orbits the Sun. As it nears the Sun, its ice heats and turns to gas, releasing dust that forms a glowing head and a long tail that always points away from the Sun.
Step by step
- Comets are icy, dusty leftovers from the early solar system.
- Near the Sun, their ice vaporizes into gas and dust.
- This forms a bright head (coma) and a long tail.
- The tail always points away from the Sun, pushed by solar wind.
People also ask
What is a comet made of?
Mostly ice, dust, and rock — often described as a 'dirty snowball'.
Why do comets have tails?
Heat from the Sun vaporizes their ice, releasing gas and dust that the solar wind blows into a tail.
Why does a comet's tail point away from the Sun?
The solar wind and sunlight push the released gas and dust outward, away from the Sun.
Part of the guide: Space & Astronomy →