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How long will the Sun live?

The answer's not as straightforward as you might think, and even the question has some hidden assumptions.
Long after life has perished on this good Earth, the Sun will experience its own death throes. But when, exactly, will this take place? The answer depends, in part, on what you mean by death.

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Exotic objects in the sky. Everything you need to know about black holes, pulsars, and the weirdest star in the universe.

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