The answer to this question is yes. It can vary, but not very much. Yet, the red giant is the coolest star.
The biggest star - VY Canis Majoris IS in a red supergiant phase and will explode as a massive supernova.
A red giant star.
Red giant is a type of star.
Yes, UY Scuti is a red supergiant star, which is a type of star that is larger and brighter than a red giant star.
Betelgeuse is a red giant.
Its justa red giant or supergiant
A red giant is a very luminous star (because of its great size) but has a cool surface temeperature. Giants are the second biggest stars. Super giants are the largest.
Red giants. By the way, what if it was a white star.
Dubhe is not a red giant but rather a subgiant star. It is the brightest star in the Big Dipper asterism and is classified as an evolved F-type subgiant star.
A red giant, when a main sequence star begins fusing helium into carbon in the star's core. When our Sun becomes a red giant, in another 4 billion years or so, it will expand to consume Mercury and Venus at least, and possibly the Earth as well.
The biggest star in OUR Solar System is the Sun... Yes, the big hot orange, yellow and red thing that gives our Earth light.
Our sun is expected to become a red giant within a few billion years. The red giant star Antares has a diameter 800 times that of the Sun.