Alpha Orionis -

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).

(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

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

Recent studies suggest the existence of a smaller, Sun-like companion star (Betelgeuse B) that may influence its long-term brightness cycles. Life Cycle and Future

Despite being only about 8 to 10 million years old —much younger than our 4.6-billion-year-old Sun—its massive size caused it to evolve rapidly. It is roughly 100,000 times brighter than the

Distinctive orange-red hue, visible even without equipment. Variability and Observation

A red supergiant nearing the end of its life cycle. Physical Characteristics Betelgeuse is a , meaning its

Usually the 10th brightest star in the night sky, its magnitude typically ranges from +0.0 to +1.3 .