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.

Betelgeuse is a , meaning its brightness fluctuates over time. alpha orionis

Usually the 10th brightest star in the night sky, its magnitude typically ranges from +0.0 to +1.3 . In late 2019 and early 2020, it experienced

It is roughly 100,000 times brighter than the Sun but significantly cooler, with a surface temperature of approximately 3,600 Kelvin (6,020°F). It is roughly 100,000 times brighter than the

A red supergiant nearing the end of its life cycle.

(α Orionis), famously known as Betelgeuse , is a massive red supergiant marking the western shoulder of the constellation Orion . It is one of the largest and most luminous stars visible to the naked eye. Physical Characteristics