The radius of supergiant stars can vary significantly depending on the specific type and stage of the star's evolution. Generally, supergiant stars have radii that range from about 100 to 1,000 times that of the Sun. For instance, a well-known red supergiant like Betelgeuse has an estimated radius around 900 times that of the Sun. These immense sizes contribute to their brightness and distinct appearances in the night sky.
A supergiant star can have different colors depending on its temperature. A hotter supergiant star will appear blue or white, while a cooler supergiant star will appear red or orange.
Red super giant.
Its famous super giant star is Betelgeuse, a red giant and very noticeably red when you look at it. It is in the top left corner of Orion.
Alpha Ophiuchi is considered to have a stellar classification of A5 III, which makes it a "normal" giant, not a supergiant.
No. That is when stars run out of hydrogen. They then have helium for fuel.
The giant star
Polaris is a yellow super-giant with two smaller companions, Polaris Aa has a radius which is 46 +/- 3 times the Sun's radius.
A red giant can have a radius of 50 million to 500 million kilometres.
Hypergiant.
super giants are a very very big star
A Super Nova.
super-giant star
one is big one is small
Stellar Nebula - Average Star- Red Giant - Planetary Nebula - White Dwarf Stellar Nebula - Massive Star - Red Super Giant - Super Nova- Neutron Star Stellar Nebula - Massive star - Red Super Giant -Super Nova - Black Hole
sirius
That would mainly depend on the star's mass.
They are big stars.