NGC 4921 is a large barred spiral galaxy in the Coma Cluster, located in the constellation Coma Berenices. It was discovered by German-British astronomer William Herschel on 11 April 1785. [4] It is about 320 million light-years from Earth. [3]

2010年8月30日 · The magnificent spiral NGC 4921 has been informally dubbed anemic because of its low rate of star formation and low surface brightness. Visible in the image are, from the center, a bright nucleus, a bright central bar, a prominent ring of dark dust, blue clusters of recently formed stars, several smaller companion galaxies, unrelated galaxies ...

NGC 4921 是一个 后发座星系团 内的 棒旋星系，位于 后发座，距离地球约3.2亿光年 [3] 这个星系有一个带有棒状结构的核心，周围由含有新形成的高温蓝色恒星的明显尘埃环环绕。

NGC 4921 是一個 后髮座星系團 內的 棒旋星系，位於 后髮座，距離地球約3.2億光年 [3] 這個星系有一個帶有棒狀結構的核心，周圍由含有新形成的高溫藍色恆星的明顯塵埃環環繞。

NGC 4921 是一個 后髮座星系團 內的 棒旋星系，位於 后髮座，距離地球約3.2億光年 [3] 這個星系有一個帶有棒狀結構的核心，周圍由含有新形成的高溫藍色恆星的明顯塵埃環環繞。

2009年2月5日 · A spectacular new image of an unusual spiral galaxy in the Coma Galaxy Cluster has been created from data taken by the Advanced Camera for Surveys on the NASA/ESA Hubble Space Telescope. It reveals fine details of the galaxy, NGC 4921, as well as an extraordinary rich background of more remote galaxies stretching back to the early Universe.

Since NGC 4921 is a member of the Coma Cluster of Galaxies, refining its distance would also allow a better distance determination to one of the largest nearby clusters in the local universe. The magnificent spiral NGC 4921 has been informally dubbed anemic because of its low rate of star formation and low surface brightness.

2009年2月5日 · This very deep image taken with the NASA/ESA Hubble Space Telescope shows the spiral galaxy NGC 4921 along with a spectacular backdrop of more distant galaxies.

The magnificent spiral NGC 4921 has been informally dubbed anemic because of its low rate of star formation and low surface brightness. The remarkably sharp image was made with Hubble's Advanced Camera for Surveys, currently in need of repair.

2013年11月25日 · Since NGC 4921 is a member of the Coma Cluster of Galaxies, refining its distance would also allow a better distance determination to one of the largest nearby clusters in the local universe. The magnificent spiral NGC 4921 has been informally dubbed anemic because of its low rate of star formation and low surface brightness.