"What exactly are the methods used for dating fossils and/or meteorites believed to be in excess of 1 billion years old? Are errors common?"
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Living in a Dying Solar System
Observations of distant stars tell us about our own future. Roughly 5 billion years from now, the Sun will begin to swell as a red giant, and the solar system will be transformed into a very different place.
Source: [astrobio.net]
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