Betelgeuse is a , meaning its brightness fluctuates over time.
Usually the 10th brightest star in the night sky, its magnitude typically ranges from +0.0 to +1.3 . alpha orionis
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. Betelgeuse is a , meaning its brightness fluctuates
Distinctive orange-red hue, visible even without equipment. Variability and Observation Betelgeuse is a