The 'Great Dimming' of Betelgeuse was caused by star gases Engadget'Great Dimming' of Betelgeuse star is solved BBC NewsHow Betelgeuse changed in brightness in 2019–2020 European Southern Observatory (ESO)New images help solve celestial mystery of Betelgeuse's great dimming CNN Astronomers Were Puzzled by “Great Dimming” of Betelgeuse – Now the Mystery Is Solved SciTechDailyView Full Coverage on Google News