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Widely recognised as being among the largest known stars, [26] radius decreased to ~500 R ☉ during the 2020 great dimming event. [76] R Horologii: 635 [61] L/T eff: A red giant star with one of the largest ranges in brightness known of stars in the night sky visible to the unaided eye. Despite its large radius, it is less massive than the Sun.
List of the most massive known stars. Legend. Wolf–Rayet star. Luminous blue variable. O-type star. B-type star. The following two lists show a few of the known stars, including the stars in open cluster, OB association and H II region.
The Sloan Great Wall, the Pisces–Cetus Supercluster Complex, the Horologium-Reticulum Supercluster and the Shapley Supercluster as seen in the 2dF Galaxy Redshift Survey. This is a list of the largest cosmic structures so far discovered. The unit of measurement used is the light-year (distance traveled by light in one Julian year ...
1995 — First detection of small-scale structure in the cosmic microwave background. 1995 — Hubble Deep Field survey of galaxies in field 144 arc seconds across. 1998 — The 2dF Galaxy Redshift Survey maps the large-scale structure in a section of the Universe close to the Milky Way. 1998 — The Hubble Deep Field South is compiled.
List of largest galaxies. A image of the supergiant elliptical galaxy . are some of the largest galaxies known. The is a colossal spiral galaxy disturbed by the smaller . It is the largest known spiral galaxy with the isophotal diameter of over 717,000 (220 ). [1]
List of largest star clusters. Omega Centauri, one of the largest star clusters. Below is a list of the largest known star clusters, ordered by diameter in light years, above the size of 50 light years in diameter. This list includes globular clusters, open clusters, super star clusters, and other types.
UY Scuti. UY Scuti (BD-12°5055) is a red supergiant star, located 5,900 light-years away in the constellation Scutum. It is also a pulsating variable star, with a maximum brightness of magnitude 8.29 and a minimum of magnitude 10.56, which is too dim for naked-eye visibility. It is considered to be one of the largest known stars, with a radius ...
In cosmology, galaxy filaments are the largest known structures in the universe, consisting of walls of galactic superclusters.These massive, thread-like formations can commonly reach 50/h to 80/h megaparsecs (160 to 260 megalight-years)—with the largest found to date being the Hercules-Corona Borealis Great Wall at around 3 gigaparsecs (9.8 Gly) in length—and form the boundaries between ...