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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 ] This is a list of largest galaxies known, sorted by order of increasing major axis diameters.
The largest of these may have a hydrostatic-equilibrium shape, but most are irregular. Most of the trans-Neptunian objects (TNOs) listed with a radius smaller than 200 km have " assumed sizes based on a generic albedo of 0.09" since they are too far away to directly measure their sizes with existing instruments.
Largest known galaxy ESO 383-76: Centaurus: 540.89 kiloparsecs (1,764,000 light-years) 90% total B-light: Central galaxy of Abell 3571 [citation needed] Largest spiral galaxy NGC 6872: Pavo: 220 kiloparsecs (718,000 light-years) D 25.5 isophote: Interacting galaxy, stripped by IC 4970. [citation needed] Largest irregular galaxy UGC 6697: Leo
The Triangulum Galaxy (M33) is the third-largest member of the Local Group, with a mass of approximately 5 × 10 10 M ☉ (1 × 10 41 kg), and is the third spiral galaxy. [6] It is unclear whether the Triangulum Galaxy is a companion of the Andromeda Galaxy; the two galaxies are 750,000 light years apart, [ 7 ] and experienced a close passage 2 ...
List of the largest voids Void name/designation Maximum dimension (in light-years) Notes LOWZ North 13788 void: 2,953,000,000: One of largest known voids, containing 109,066 known galaxies. [29] Local Hole: 2,000,000,000: Proposed void containing the Milky Way galaxy and Local Group as an explanation for the discrepancy in the Hubble constant ...
This is the galaxy group that our galaxy belongs to. Nearest neighbouring galaxy group IC 342/Maffei Group: Most distant proto-cluster A2744z7p9OD: z=7.88 [23] Nearest proto-cluster Most distant massive proto-cluster z66OD: z=6.585 At time of discovery in 2019, the object had 12 members, including Himiko. [24] [25] [26] Least massive galaxy group