A Korean team has observed a pair of stars in an exceptionally fast orbit, defying existing theories about how stars age. This phenomenon raises questions about the nature of the dying star and what insights it may provide.

Half the stars in the universe live in pairs and when one of them dies it can feed hungrily off the other in a slow, violent dance. Now a Korean team has caught a couple of stars breaking the rules, locked in an orbit so impossibly fast that our best theories of how stars grow old cannot account for it. So what is this dying star trying to tell us?
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