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NGC 6745 (Spiral Galaxy)


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NGC 6745
Spiral Galaxy (渦巻銀河)
Gx Sm

別名 (Other names)
PGC 62691, UGC 11391, ZWG 229.13

明るさ (Brightness)
13.9等級

星座 (Constellation)
こと座 (Lyr) (Lyra)


距離 (Distance)
2億光年 (200 million light-years)

NGC 6745 is a spiral galaxy located 200 million light years from the Earth in the constellation Lyra.

NGC 6745 (Spiral Galaxy) : Picture

A Galaxy Collision in NGC 6745
A Galaxy Collision in NGC 6745
(C) NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration
Galaxies don't normally look like this. NGC 6745 actually shows the results of two galaxies that have been colliding for only hundreds of millions of years. Just off the above digitally sharpened photograph to the lower right is the smaller galaxy, moving away. The larger galaxy, pictured above, used to be a spiral galaxy but now is damaged and appears peculiar. Gravity has distorted the shapes of the galaxies. Although it is likely that no stars in the two galaxies directly collided, the gas, dust, and ambient magnetic fields do interact directly. In fact, a knot of gas pulled off the larger galaxy on the lower right has now begun to form stars. NGC 6745 spans about 80 thousand light-years across and is located about 200 million light-years away.

NGC 6745 NGC 6745
NGC 6745
(C) NASA
NGC 6745
(C) NASA
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NGC 6745 (Spiral Galaxy) : Movie

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