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How old is the Sun?

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Current scientific opinion is that the Sun was formed approximately 4.5 billion years ago.

The age of the Sun is calculated in two ways. The first method uses computer models of stellar evolution and nucleocosmochronology, which has given the age of 4.57 billion years.

The other method is radiometric dating of the oldest Solar System material, and this has given the closely matching age of 4.534 billion years.

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