There are different type of stars. As you already know the sun is a star, there are stars bigger than the sun. The stars bigger than the sun are Supergiants are the largest stars, the diameter seven times the sun. A Giant is more common stars than Supergiants diameter 10 to 100 times as large as the sun. Redgiants are smaller than the sun, they are cooler temperatures than giants, less bright, but still a massive size stars. Meduim-size or dwarf stars are about as large as the sun. Then white dwarfs are smaller than the distance across Asia.

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