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Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
Komossa's object is a galaxy in which the supermassive black hole disrupted a star. Lindsay-Shapley Ring is a ring galaxy in Volans; Maffei 1 is an elliptical galaxy in the constellation Cassiopeia and the closest giant elliptical galaxy to the Milky Way. Maffei 2 is a spiral galaxy about 10 million light-years away in the constellation Cassiopeia.
List of largest galaxies; List of galaxies with richest globular cluster systems; List of nearest galaxies; List of galaxies named after people; List of spiral galaxies; List of polar-ring galaxies; List of ring galaxies; List of quasars; Satellite galaxies. List of satellite galaxies of the Milky Way; List of Andromeda's satellite galaxies ...
These names of stars that have either been approved by the International Astronomical Union or which have been in somewhat recent use. IAU approval comes mostly from its Working Group on Star Names, which has been publishing a "List of IAU-approved Star Names" since 2016. As of February 2025, the list included a total of 492 proper names of stars.
Lamont's Star is a peculiar star near the nucleus of the Andromeda Galaxy (Messier 31). [46] Latham's planet is the small red dwarf star or massive brown dwarf HD 114762 b in Coma Berenices, unofficially named Latham's planet after its discoverer David Latham (1989). [47] Liller's Star is a star near Centaurus X-3. Named after William Liller. [48]
The following is a list of particularly notable actual or hypothetical stars that have their own articles in Wikipedia, but are not included in the lists above. BPM 37093 — a diamond star Cygnus X-1 — X-ray source
This list includes systems with at least three confirmed planets or two confirmed planets where additional candidates have been proposed. The stars with the most confirmed planets are the Sun (the Solar System's star) and Kepler-90, with 8 confirmed planets each, followed by TRAPPIST-1 with 7 planets. The 1,033 multiplanetary systems are listed ...
These are lists of planets.A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk.