Stars are giant balls of gas made by Hydrogen, bound together by their own force of gravity. Stars are heavenly bodies, which shine like our sun. Many shine brightly, the others have dim glow. Some are red while others are blue. The energy that makes them shine come from a kind of power plant in their interior, where atomic nuclei of hydrogen atoms are fused together to form helium atoms. The stars do not live forever and 'die' at some point. Many simply get extinguished, while very heavy stars expand and explode. The stars shine approximately 10 billion years, till it 'dies'.
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