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Little red dots (LRDs) are a class of small, red-tinted galaxies discovered by the James Webb Space Telescope. [1] [2] [3] Their discovery was published in March 2024, and they are currently poorly understood. [4] They appear to have existed between 0.6 and 1.6 billion years after the Big Bang, from 13.2 to 12.2 billion years ago. [1] LRDs were ...
HD1 is one of the earliest and most distant known galaxies yet identified in the observable universe, having a spectroscopic redshift of z = 13.27, meaning that the light from the galaxy travelled for 13.5 billion years on its way to Earth, which due to the expansion of the universe, corresponds to a proper distance of approximately 33.4 billion light-years (10.2 billion parsecs).
Messier 106 (also known as NGC 4258) is an intermediate spiral galaxy in the constellation Canes Venatici.It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth.
Red nuggets is the nickname given to rare, unusually small galaxies packed with large amounts of red stars that were originally observed by the Hubble Space Telescope in 2005. [1] They are ancient remnants of the first massive galaxies. [2] The environments of red nuggets are usually consistent with the general elliptical galaxy population. [3]
The brightness from the presumed red supergiant progenitor allowed its mass to be estimated as 12.5 ± 1.5 M ☉. [11] M95 is one of several galaxies within the M96 Group, a group of galaxies in the constellation Leo, the other Messier objects of which are M96 and M105. [12] [13] [14] [15]
Messier 83 or M83, also known as the Southern Pinwheel Galaxy and NGC 5236, is a barred spiral galaxy [7] approximately 15 million light-years away in the constellation borders of Hydra and Centaurus.
Abell 2744, nicknamed Pandora's Cluster, is a giant galaxy cluster resulting from the simultaneous pile-up of at least four separate, smaller galaxy clusters that took place over a span of 350 million years, and is located approximately 4 billion light years from Earth. [1]
CEERS-93316 is a high-redshift galaxy with a spectroscopic redshift z=4.9. [3] Significantly, the redshift that was initially reported was photometric (z = 16.4) and would have made CEERS-93316 the earliest and most distant known galaxy observed.