Betelgeuse 2024 Castrol. Betelgeuse is a red giant, an enormous star that has burned up all the hydrogen fuel in its core and expanded hundreds of times beyond its original envelope.astronomers. Of all the stars in the sky, betelgeuse must be among the most enigmatic.
Unveiling the secrets of quasars: Then the magnitude ( m) of the betelgeuse supernova would be calculated as: