Betelgeuse . It is about 900 to 1200 times larger than the Sun. Other star names include Sirus A, Pollux (orange giant), Arcturus (red giant), Aldebaran (red giant), Rigel (blue hypergiant), Pistol star (blue hypergiant), Antares A (red supergiant) , etc. . Most of them are five hundred to one thousand times bigger stars than the Sun.