They are the largest stars in the universe in terms of physical … Most stars of this type are between 200 and 800 times the radius of our Sun . Red supergiant definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Supergiant star, any star of very great intrinsic luminosity and relatively enormous size, typically several magnitudes brighter than a giant star and several times greater in diameter.

Super red giant synonyms, Super red giant pronunciation, Super red giant translation, English dictionary definition of Super red giant. A red giant star is a dying star in the last stages of stellar evolution. Red Supergiant. The very largest stars in our galaxy, all red supergiants, are about 1,500 times the size of our home star.

A good example of a red supergiant is the star Betelgeuse, in the constellation Orion. Red supergiants are supergiant stars of spectral type K-M and a luminosity class of I. The biggest stars in the universe are called red supergiants.To get a picture of how huge these stars are, just imagine being able to fit 1800 suns into one red supergiant or imagine the sun growing so much that it already reaches the orbit of Saturn.

Look it up now! Red supergiant stars don’t last long; typically only a few hundred thousand years, maybe up to a million.