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Below are lists of the largest stars currently known, ordered by radius and separated into categories by galaxy. The unit of measurement used is the radius of the Sun (approximately 695,700 km ; 432,300 mi ).
Studying the Arches Cluster, which is currently the densest known cluster of stars in our galaxy, astronomers have confirmed that no stars in that cluster exceed about 150 M ☉. The R136 cluster is an unusually dense collection of young, hot, blue stars.
It is the largest known spiral galaxy with the isophotal diameter of over 717,000 light-years (220 kiloparsecs). [1] ... Galaxies are vast collections of stars, ...
UY Scuti was analyzed to be the largest and the most luminous of the three stars measured, at 1,708 ± 192 R ☉ (1.188 × 10 9 ± 134,000,000 km; 7.94 ± 0.89 AU) based on an angular diameter of 5.48 ± 0.10 mas and an assumed distance of 2.9 ± 0.317 kiloparsecs (kpc) (about 9,500 ± 1,030 light-years) which was originally derived in 1970 ...
IC 1101 is considered a large galaxy characterized by an extensive, diffuse halo. This is the intracluster light, or ICL, free-flying stars that are not bound to any galaxy. This ubiquitous mass of stars within galaxy clusters are usually more concentrated around the brightest cluster galaxies, such as IC 1101, however. [31]
Lying in the galaxy cluster Abell 3627, this galaxy is being stripped of its gas by the pressure of the intracluster medium (ICM), due to its high speed traversal through the cluster, and is leaving a high density tail with large amounts of star formation. The tail features the largest amount of star formation outside of a galaxy seen so far.
VY Canis Majoris (abbreviated to VY CMa) is an extreme oxygen-rich red hypergiant or red supergiant (O-rich RHG or RSG) and pulsating variable star 1.2 kiloparsecs (3,900 light-years) from the Solar System in the slightly southern constellation of Canis Major.
Galaxy Notes B037-V327 1.08 +0.17 −0.049 ... List of largest star clusters; References External links. The young cluster RMC 136a European ...