A red supergiant nearing the end of its life cycle.
Usually the 10th brightest star in the night sky, its magnitude typically ranges from +0.0 to +1.3 . alpha orionis
In late 2019 and early 2020, it experienced a historic drop in brightness, eventually attributed to a massive surface mass ejection that cooled into an obscuring dust cloud. A red supergiant nearing the end of its life cycle
Betelgeuse is a , meaning its brightness fluctuates over time. meaning its brightness fluctuates over time.