Betelgeuse, a red supergiant, abruptly started going dark in December 2019
source https://gadgets.ndtv.com/science/news/betelgeuse-star-glow-dimming-supergiant-dim-low-bightness-fade-research-study-reason-2468823#rss-gadgets-all
source https://gadgets.ndtv.com/science/news/betelgeuse-star-glow-dimming-supergiant-dim-low-bightness-fade-research-study-reason-2468823#rss-gadgets-all
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