Early attempts to classify the stars led some astronomers to split them into "Reisen" and "Zwergen," German words for "Giants" and "Dwarfs," these being large and small creatures of mythology. Later observations uncovered more sizes and these were named "subgiants," "bright giants," "supergiants" and "hypergiants."
Modern astronomy reveals that most stars are dwarfs. The Sun, incidentally, was original designated a dwarf star because it was significantly smaller that the giants and there was no "regular" size category. However, the Sun is, in fact, larger than 80% of all stars and is more properly referred to as a "Main Sequence" star.
Interestingly, allow the sizes of stars vary so greatly, their masses vary much less. Giants tend to be very "thin" stars, the very biggest being hardly as dense as Earth's upper atmosphere, while dwarfs can be amazingly dense.
Red giant stars are tremendously larger than the sun.
Because quite simply, its colour is red and compared to other stars it is a giant. See related question.
Because they expand, due to modecules in the air, most red gaints start out as tiny stars known as "white dwarfs" which, over millions of years, expand to form a red giant. Eventually after billions of years the Red Giant collapses and turns into a supernova, which can then form into a Black hole I hope this Answered your question! =)
Betelgeuse is a red supergiant. [See related link] There are thousands, possibly millions/billions of Supergiant stars in the Universe.
Smaller stars like our own expand into a red giant and then eventually collapse into a white dwarf, the more larger stars like a bright giant star expand into a hyper giant or a super giant. Super giant stars can go supernova and collapse into a neutron star, a white dwarf, or a black hole. The hyper giant stars go hypernova and make a gamma ray that eventually ends into a black hole.
A collection of thousands and millions of stars is called a galaxy.
Red giant stars are tremendously larger than the sun.
The sun is a star itself. The sun is actually a very small star. There are stars that are WAY bigger then the sun.Like the VY Canis majoris star. The sun is invisible compared to that super giant star.
Despite being larger than most stars, the sun is called a yellow dwarf because it is far smaller than the giant and supergiant stars.
red giant
No. Sirius consists of two stars. Sirius A is larger than the sun but is not a giant. Sirius B is a white dwarf,
A neutron star is the "end of the line" for a giant star that exploded as a supernova. The material in a neutron star is packed so densely that a chunk of it the size of a cigarette package would weigh thousands of tons. It spins rapidly, at a steady rate (they are sometimes called "radio beacon stars").
Big huge stars
It is a gas giant, and it has easily visible rings.
the dieing stars have a larger ratio than the just born stars.
Many stars are bigger, but Betelgeuse is one of them, a red giant.
Big huge stars