A giant among giants: With an estimated diameter of 400 million kilometres, the red star Antares is large enough to consume the solar system almost to the orbit of Mars.
A term used especially for stars in the later stages of their evolution after the rapid expansion that follows the end of their main sequence phase.
Arcturus in the northern constellation of Boötes is the brightest giant star in the skies of Earth. Arcturus has a diameter some twenty times that of the Sun, and is more than a hundred times as luminous. Imagery provided by Aladin sky atlas
v2.1g
eSky © copyright Mark Fisher 1999-2025
