A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. It is a large ball of burning gas in space. Stars appear to us as small points of light in the sky on clear nights. It is a celestial body of great mass that produces energy by means of nuclear fusion reactions.
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A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. It is a large ball of burning gas in space. Stars appear to us as small points of light in the sky on clear nights. It is a celestial body of great mass that produces energy by means of nuclear fusion reactions.
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