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A collision of two galaxies has left a merged star system with an unusual appearance as well as bizarre internal motions. Messier 64 (M64) has a spectacular dark band of absorbing dust in front of the galaxy's bright nucleus, giving rise to its nicknames of the "Black Eye" or "Evil Eye" galaxy. Located in the northern constellation Coma Berenices, M64 resides roughly 17 million light-years from Earth. Active formation of new stars is occurring in the shear region where gasses that are rotating oppositely to the gas and stars in the inner regions collide. Particularly noticeable in the image are hot, blue young stars that have just formed, along with pink clouds of glowing hydrogen gas that fluoresce when exposed to ultraviolet light from newly formed stars. Astronomers believe that the oppositely rotating gas arose when M64 absorbed a satellite galaxy that collided with it, perhaps more than one billion years ago, and has by now been almost completely destroyed.
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TOP22316396
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達志影像
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