What is the classification of Aldebaran?

Aldebaran is classified as a red giant star. This classification is based on its stage in stellar evolution; specifically, Aldebaran has exhausted the hydrogen fuel in its core and has moved into the red giant phase.

As a red giant, Aldebaran has expanded significantly in size and cooled in temperature compared to its earlier main sequence phase, leading to its reddish appearance. It is located in the constellation Taurus and is one of the brightest stars in the night sky. Its classification as a red giant is also supported by observational characteristics, such as its luminosity and effective temperature, which indicate it possesses a larger radius and lower surface temperature than typical main-sequence stars.

Understanding why Aldebaran is not classified as a blue supergiant, red supergiant, or white dwarf is important. Blue supergiants are much hotter and more massive stars that have not yet reached the red giant phase. Red supergiants, while also massive, represent an even later evolutionary stage than red giants and are typically much larger and more luminous than Aldebaran. White dwarfs, on the other hand, are remnants of stars that have shed their outer layers and are in the final stages of stellar evolution, vastly different from the characteristics exhibited by