New images help solve celestial mystery of Betelgeuse's great dimming
CNN
The dimming of the red giant Betelgeuse, observed globally between November 2019 and March 2020, caused widespread speculation as to its cause. A new study reveals what caused the historic dimming, which some had speculated was a sign that the star was about to explode as a supernova.
The red giant, a star in the last stages of its life, experienced two significant drops in brightness, which caused some astronomers to believe that it was nearing its end and could explode in a supernova -- something that was last observed in the 17th century.
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