Wow, Betelgeuse Might Be 25% Closer than Previously Believed

The red supergiant Betelgeuse. Image Credit: ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella

In the last year, Betelgeuse has experienced two episodes of dimming. Normally, it’s one of the ten brightest stars in the sky, and astrophysicists and astronomers got busy trying to understand what was happening with the red supergiant. Different research came up with some possible answers: Enormous starspots, a build-up of dust, pre-supernova convulsions.

Now a new study is introducing another wrinkle into our understanding of Betelgeuse. The authors say that Betelgeuse is both smaller and closer than previously thought.

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