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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).
Markarian's Chain is a chain of galaxies in the Virgo Cluster, named after Benjamin Markarian; Robert's Quartet is a group of galaxies in Phoenix, named after Robert Freedman. Seyfert's Sextet is a group of galaxies in Serpens, named after Carl Keenan Seyfert. Stephan's Quintet is a group of galaxies in Pegasus, named after Édouard Stephan.
List of galaxies, general list of galaxies; Galaxies by type. List of spiral galaxies; List of ring galaxies; List of polar-ring galaxies; List of quasars; Galaxies by association. List of largest galaxies; List of nearest galaxies; Satellite galaxies of the Milky Way; Other characteristics. List of galaxies named after people
The following is a list of astronomers, astrophysicists and other notable people who have made contributions to the field of astronomy.They may have won major prizes or awards, developed or invented widely used techniques or technologies within astronomy, or are directors of major observatories or heads of space-based telescope projects.
NEW YORK -Former U.S. Attorney General Ramsey Clark, who helped shape U.S. civil rights law during the Johnson administration but went on to travel the globe to fight human rights abuses by his ...
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
A civil rights attorney and incoming Howard University law professor is among the dead after a midair collision between a passenger jet with a military helicopter killed 67 people on Wednesday ...
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