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Abell 2029 is a large cluster of galaxies
Galaxy

A galaxy is a massive, gravitation system that consists of stars and stellar remnants, an interstellar medium of gas and cosmic dust, and an important but poorly-understood component tentatively dubbed dark matter....
 a billion light years away in the constellation Serpens
Serpens

Serpens is a constellation. Its name is Latin for snake, and it is unique among the modern constellations in being split into two separate sections, Serpens Caput to the west and Serpens Cauda to the east....
, close to its boundary with Virgo
Virgo (constellation)

Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky....
 . The central galaxy (IC 1101
IC 1101

IC 1101 is a giant lenticular galaxy at the center of the Abell 2029 galaxy cluster. It is 1.07 billion light years away in the constellation of Serpens....
) is perhaps the largest known, with estimates ranging from 5.6 to over 6 million light years across; contrast this with the Milky Way
Milky Way

The Milky Way, sometimes called simply the Galaxy, is the galaxy in which the Solar System is located. It is a barred spiral galaxy that is part of the Local Group of galaxies....
, which is 100,000 light years across.






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Abell 2029 is a large cluster of galaxies
Galaxy

A galaxy is a massive, gravitation system that consists of stars and stellar remnants, an interstellar medium of gas and cosmic dust, and an important but poorly-understood component tentatively dubbed dark matter....
 a billion light years away in the constellation Serpens
Serpens

Serpens is a constellation. Its name is Latin for snake, and it is unique among the modern constellations in being split into two separate sections, Serpens Caput to the west and Serpens Cauda to the east....
, close to its boundary with Virgo
Virgo (constellation)

Virgo is one of the constellations of the zodiac. Its name is Latin for virgin, and its symbol is . Lying between Leo to the west and Libra to the east, it is the second largest constellation in the sky....
 . The central galaxy (IC 1101
IC 1101

IC 1101 is a giant lenticular galaxy at the center of the Abell 2029 galaxy cluster. It is 1.07 billion light years away in the constellation of Serpens....
) is perhaps the largest known, with estimates ranging from 5.6 to over 6 million light years across; contrast this with the Milky Way
Milky Way

The Milky Way, sometimes called simply the Galaxy, is the galaxy in which the Solar System is located. It is a barred spiral galaxy that is part of the Local Group of galaxies....
, which is 100,000 light years across. It is 1.070 Billion light-years away, about 80 times bigger than the Milky Way, with a light output 2 trillion times greater than our sun, announced in July 1990 by Juan M. Uson, Stephen P. Boughn, and Jeffrey R. Kuhn. This type of galaxy is called a brightest cluster galaxy
Brightest cluster galaxy

Brightest cluster galaxy is defined as the brightest galaxy in a cluster of galaxies. BCGs include the most massive galaxies in the universe....
 and may have grown to its large size by accreting nearby galaxies.

External links


Sources

http://curious.astro.cornell.edu/question.php?number=412