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Anne’s Image of the Day: Spiral Galaxy NGC 4921

28 Apr 2014, 10:59 UTC
Anne’s Image of the Day: Spiral Galaxy NGC 4921
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April 28, 2014 NGC 4921, a barred spiral galaxy in Coma Berenices Image Credit: NASA / ESA / Roberto Colombari / Hubble Legacy Archive NGC 4921 (also known as UGC 8134) is a barred spiral galaxy, located about 320 million light-years away from Earth in the northern constellation of Coma Berenices (Berenice’s Hair), while it is [continue reading]

April 28, 2014
NGC 4921, a barred spiral galaxy in Coma Berenices

Image Credit: NASA / ESA / Roberto Colombari / Hubble Legacy Archive
NGC 4921 (also known as UGC 8134) is a barred spiral galaxy, located about 320 million light-years away from Earth in the northern constellation of Coma Berenices (Berenice’s Hair), while it is speeding away from us at approximately 5,482 kilometers per second. It lies near the center of the Coma Cluster, a large cluster of galaxies that contains over 1,000 galaxies.
Visible in the galaxy are, from the center, a nucleus with a bright bar that is surrounded by a prominent ring of dark dust. Then a band that contains blue clusters of recently formed stars. The outer part consists of unusually smooth, poorly distinguished spiral arms. Surrounding the galaxy are several smaller companion galaxies, many unrelated galaxies ...

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