该系统是一个扰动星系对。
此次哈勃望远镜获得的图像给出了暗物质存在的进一步证据：那些未受扰动的矮星系正是被笼罩在暗物质“软垫”之中，保护了它们不受那些狂乱毗邻星系的引力影响。
The Hubble images provide further evidence that the undisturbed galaxies are enshrouded by a "cushion" of dark matter, which protects them from their rough-and-tumble neighbourhood.
本文用星际气体自引力星系激波来解释星系的螺旋结构、恒星的扰动引力场并非必要条件。
Tn this paper, the galactic spiral structure is studied by the galactic shock wave of interstellar gas with self-gravitation. The perturbed gravitation of stars is not ?
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