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.
A red supergiant nearing the end of its life cycle. alpha orionis
Distinctive orange-red hue, visible even without equipment. Variability and Observation Despite being only about 8 to 10 million
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). 600 Kelvin (6
(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