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HCG 40 (Hickson Compact Group 40)


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HCG 40 (Hickson Compact Group 40)

距離 (Distance)
3億光年 (300 million light-years)

星座 (Constellation)
うみへび座 (Hya) (Hydra)

HCG 40 (Hickson Compact Group 40) is an interacting galaxy located 300 million light years from the Earth in the constellation Hydra.

HCG 40 (Hickson Compact Group 40) : Picture

HCG40
HCG 40
(C) NASA

Hickson Compact Group 40
Hickson Compact Group 40
(C) NASA
Galaxies, like stars, frequently form groups. A group of galaxies is a system containing more than two galaxies but less than the tens or hundreds typically found in a cluster of galaxies. A most notable example is the Local Group of Galaxies, which houses over 30 galaxies including our Milky Way, Andromeda, and the Magellanic Clouds. Pictured above is nearby compact group Hickson 40. This group is located about 300 million light-years away toward the constellation of Hydra. Of the five prominent galaxies in Hickson 40, three are spirals, one is an elliptical and one is a lenticular. Many galaxies in compact groups are either slowly merging or gravitationally pulling each other apart.
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HCG 40 (Hickson Compact Group 40) : Movie

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