What are comets? | The icy bodies of the solar system
Comets are icy bodies that orbit the sun. They can come from the Oort cloud, a vast region of icy objects that surrounds the solar system. When a comet gets close to the sun, the ice on its surface begins to vaporize, creating a tail of gas and dust. Comets can be very beautiful objects, but they can also be dangerous. If a comet's orbit brings it too close to Earth, it could impact the planet and cause widespread damage.
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