It's temperature.
It has a temperature of less than 3,700 Kelvin
It's a fairly cool star
It is red. Betelgeuse is called a red hypergiant, which is nearing its death.
Deneb is a blue-white supergiant
Betelgeuse is located in the Orion constellation and is a red star. Red stars are generally the coolest of stars.
It has a temperature of less than 3,700 Kelvin
A red color, in a star, is associated with a low surface temperature.
It's a fairly cool star
It is red. Betelgeuse is called a red hypergiant, which is nearing its death.
Orion is a constellation consisting of many different stars. Orion doesn't have a "color" of its own. The two major stars are the red giant Betelgeuse, and the blue-white supergiant Rigel. The other stars are a variety of colors.
Supergiant refers to size, not color. Supergiants can be of any normal star color, though yellow is not common.
Betelgeuse and Barnard's star are both reddish in color.
Deneb is a blue-white supergiant
Betelgeuse is located in the Orion constellation and is a red star. Red stars are generally the coolest of stars.
It is an orange supergiant star.
Betelgeuse is a red giant therefore its surface is of red color with some white sun spots.
It is a supergiant star, over 600 million miles in diameter, and is reddish in color