It can range from 0.25 that of the Sun in a red dwarf to over 2,000 times that of the Sun in a hypergiant.
China has a red flag with a yellow star
A red giant.
a big red and white star
100 times diameter of the sun.
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 star might begin to die after its main sequence. It'll balloon to a very big size. They're called red giants because the star is big and red. A red giant can die, though. Red giants die when their surface sheds into a cloud called a planetary nebula. Its core becomes a white dwarf. Our sun will go through this path.
as big as a star
The big star on the Chinese flag represents the rest of china and the small stars represent all of the islands in China
Red giant is a type of star.
It is a red dwarf star called Proxima Centauri 4.24 light years away. It's diameter is about one-seventh that of the Sun.
A red star is cool whereas a blue star is hot.
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