When Betelgeuse Explodes, It's Going to Take Out Another Star
Despite its self-destructive proclivities, the irritable giant has managed to make, and keep, a friend.
On Monday, a team of astronomers announced that they had spotted another star hewing extremely close to Betelgeuse. So close, in fact, that the second star plows through the tenuous outer atmosphere of the red supergiant.
The two objects make for a strange pair. Unlike Betelgeuse, which is approaching the end of its life, the blue-white companion (or Betelbuddy) has yet to start burning hydrogen in its core. In other words, the star hasn't entered the chapter of its life known as the main sequence — one that characterizes many stars, including our own.
'You have a star that is about to die, and it's being orbited by a star that's not fully born,' said Miguel Montargès, an astronomer at the Paris Observatory who was not involved with the new research.
'Isn't that crazy?' said Steve B. Howell, a scientist at NASA Ames Research Center in California and one of the discoverers of the companion star. 'It's kind of crazy.'
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