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In October 2019, a little before that an unknown virus will change the world, one of the stars most visible and recognizable darkened visibly in the firmament. is Betelgeuse, a red giant located about 700 light-years from Earth , and suspended in the constellation of Orion, saw its brightness reduced by up to three times. Astronomers rushed to observe it and to find out why, while many people discovered then that Betelgeuse is doomed to explode in the supernova is the brighter of the story, at some point between now and the next 10,000 years.
astronomers have proposed various explanations to explain this darkening, the largest recorded in the last 150 years, and that it did not disappear