EntityQ60772858· pop 12· linked from 240 articlesblue loopSign in to savestage in the life of an evolved star where it changes from a cool star to a hotter one before cooling againConnectionsexotic starEntitygiant starEntitystellar classificationEntitybinary starEntitymain sequenceEntityvariable starEntityhypergiantEntityasymptotic giant branchEntitySunConceptSolar SystemEntitystarEntityplanetEntityBlack holeConceptgravityEntitygalaxyEntityInternational Standard Book NumberEntitysolar eclipseEntityconstellationEntitysupernovaEntitydigital object identifierEntityCategoriesHertzsprung–Russell classificationsStellar evolution