What is the difference between a planet and a star?

Astromony - difference b/t Star / Planet ??

  • Could you please let me know what is the difference between a star and a planet? Is a planet a category of stars?

  • Answer:

    A star is basically a giant hydrogen bomb. It sits in space for billions of years fusing hydrogen into helium, creating loads of light and heat, among other things. A planet orbits a star, and is just a piece of matter that does not perform nuclear fusion. Some of them are rocky balls (like the Earth, or Mars), while some of them are giant balls of gas (like Jupiter, or Saturn). EDIT: fungusbrains1, planets twinkle too. They don't produce their own light, but they reflect light from the Sun. Any cosmic object whose light rays pass through the atmosphere twinkles.

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Other answers

A star burns creating heat light and hydrogen,while planets orbit stars and are usaully either hot like Venus or freezing like Pluto... P.S. red stars means their light is reaching us.

a star is burning, a planet is not. when you look up, if it twinkles, it is a star. if it doesn't twinkle, it is a planet.

fungusbrains1

like danmerqury said. The word planet comes from the Greek meaning "wandering planet"

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