Such a star, would be called a "white dwarf" star.
No, a red giant is not an old, very dense hot star that is cooling. Instead, it is a late stage in the evolution of a star that has exhausted the hydrogen in its core and is now fusing helium or heavier elements. As a result, the outer layers expand and cool, giving the star its characteristic reddish color. While red giants can be quite large, they are not notably dense compared to other stellar types, like white dwarfs.
That may refer to a white dwarf, or to a neutron star.
Black hole- an object so dense that even light cannot escape its gravity Red Giant - a large star that is relatively cool White Dwarf - an old, very dense hot star that is cooling Nebula - A mass if gas and dust
43.
An old, very dense, hot star that is cooling is called a white dwarf. These stars are the remnants of medium-sized stars that have exhausted their nuclear fuel and shed their outer layers. Over time, they gradually cool and fade, eventually becoming faint stellar remnants known as black dwarfs, though the universe is not old enough for any black dwarfs to exist yet. White dwarfs are primarily composed of electron-degenerate matter, which accounts for their high density.
its big but not that big as a old star. sun is a tape of star.
Behind the grille.
Star Wars: Knights of the Old Republic was made before Star Wars: The Old Republic.
Same Old Star was created in 1991.
Both. A subgiant can be a young star (1,000 years old) to an old star (10 billion years old). See related question.
From the Omg Girlz , Miss Star is 15 years old !
Black Dwarf's are theoretical. They are the end point of a White Dwarf star, after it has finished cooling down. The universe is not old enough for one to have completely cooled into a Black Dwarf. See related question.