Regarding #Betelgeuse's "historic" dimming, here's V-band & photovis magnitude estimates from @AAVSO database over past century.
*You* try maintaining constant luminosity w/~20 solar masses spread out within the size of Jupiter's orbit, w/convection & nucleosynthesis is 3D! pic.twitter.com/e2kojEZXAC

— Eerie Mamajack-o'-lantern (@EricMamajek) December 21, 2019