What is Red supergiant?
[[File:VX Sagittarii Red Supergiant Star.png|thumb|348x348px|[[VX Sagittarii]] is a red supergiant star.]] A '''red supergiant (RSG)''' is a larger and brighter type of [[red giant]] star. Red supergiants are often [[variable star]]s. They are between 100 to 1,600 times bigger than the [[Sun]]. Examples of a red supergiant star include [[Antares]], [[119 Tauri]], [[Betelgeuse]], [[Epsilon Pegasi]], and [[VV Cephei|VV Cephei A]]. Most red supergiant stars explode as [[supernova]]e. Some of the brightest become [[Wolf-Rayet star]]s before they explode.<ref>{{Cite journal|last1=Meynet|first1=G.|last2=Chomienne|first2=V.|last3=Ekström|first3=S.|last4=Georgy|first4=C.|last5=Granada|first5=A.|last6=Groh|first6=J.|last7=Maeder|first7=A.|last8=Eggenberger|first8=P.|last9=Levesque|first9=E.|last10=Massey|first10=P.|date=March 2015|title=Impact of mass-loss on the evolution and pre-supernova properties of red supergiants|url=http://www.aanda.org/10.1051/0004-6361/201424671|journal=Astronomy & Astrophysics|volume=575|pages=A60|doi=10.1051/0004-6361/201424671|issn=0004-6361}}</ref> Red supergiants are stars are some of the brightest stars. They are also the largest stars in the [[universe]]. Betelgeuse and Antares are the brightest and best known red supergiants. They are also the only first magnitude red supergiant stars. ==References== {{reflist}} [[Category:Red giants]] [[Category:Types of stars]] {{Multistub|sci|physics}}