Betelgeuse: The Clock Is Ticking, and the Alarm Is Set for 100,000 Years
If there’s one star in the sky people know about, it’s Betelgeuse.* Marking the right shoulder of the hunter Orion—remember, he’s facing us, so it’s on our left—this orange-red star is one of the brightest in the night sky. It’s been studied for as long as we’ve had telescopes, yet for all our advanced technology and knowhow, details about it are maddeningly vague. We don’t even have a good determination of how far away it is!
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