When star like our Sun reaches the end of its life, it enters one last phase, ballooning up to many times its original size. Astronomers call these objects as red giants.
Some types of red giants are..............
1. Betelguese
2. Gamma crucis
3. Antares
4. Aldebaran
5. Arcturus
Rigel, that's one. (Strictly speaking it's a blue supergiant.)
The term "blue giant" is used for a variety of stars; typical diameters are 5-10 times the diameter of the Sun.
There are many blue giants whose sizes differ.
Here are some red giants:
Rigel and Spica
The hottest, most massive stars are blue.
big stars
Some of the SUPER GIANT stars are Sirius,Sun,Rigel,Betelgeuse,and procyon.
blue stars are hotter
Yes they do.
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
big stars
The blue giant is blue because of the temperature of the gases surrounding the star. These stars are extremely hot.
Some of the SUPER GIANT stars are Sirius,Sun,Rigel,Betelgeuse,and procyon.
blue stars are hotter
White Dwarves and Blue giants are both hotter than Red giant stars.
Yes they do.
Blue stars are more luminous than other main sequence stars but not necessarily brighter than giant and supergiant stars.
usually blue, but some are purple-ish like.
No blue stars are the largest and brightest stars know of. (They are also called Hypergiants). Red giants are dimmer.
A blue giant star is made of the same material as other stars. It is made of several types of gases that burn very hotly.
I can't understand this question. There are lots of these stars that are clearly visible. Some of the brightest stars in the sky are these types.
The five primary types of stars are the red dwarf star, yellow star, blue giant star, giant star, and super giant star. The billions of stars in the universe fall under one of these classifications.