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Kavli Institute for the Physics and Mathematics of the Universe

Study of Supergiant Star Betelgeuse Unveils the Cause of its Pulsations; Recalibrates its Mass, Radius, and Distance

4 Feb 2021, 05:13 UTC
Study of Supergiant Star Betelgeuse Unveils the Cause of its Pulsations; Recalibrates its Mass, Radius, and Distance ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella

Betelgeuse is normally one of the brightest, most recognizable stars of the winter sky, marking the left shoulder of the constellation Orion. But lately, it has been behaving strangely: an unprecedentedly large drop in its brightness has been observed in early 2020, which has prompted speculation that Betelgeuse may be about to explode. 

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