Scientists watch stars spin to gauge their age

January 5, 2015 10:28 PM

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Turns out Hollywood celebs aren’t the only stars who hide their age well – small cool stars are very good at frustrating astronomers’ efforts to determine how old they are, because they essentially look the same for most of their lives.

But scientists have found a clever way to peg these stars’ ages – using their rates of spin. The findings, described online in the journal Nature and at the American Astronomical Society meeting in Seattle, could give astronomers a better way to understand the life histories of sun-like stars – and ...

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