ring galaxy

基本解釋

Over 20 million light-years away, its peculiar appearance marks it as a polar ring galaxy.
它距我們超過 2 千萬光年之遠(yuǎn)，其獨(dú)特的外形給它帶來了極環(huán)星系的名字。
Coincidentally, visible in the gap (at about one o'clock) is yet another ring galaxy that likely lies far in the distance.
請注意在黑暗間隙大約1點(diǎn)鍾指針方曏的位置有另一個環(huán)形星系，它可能位於離我們更遠(yuǎn)的位置上。
How Hoag's Object formed remains unknown, although similar objects have been identified and collectively labeled as a form of ring galaxy.
我們還不知道霍格發(fā)現(xiàn)的這個東西是如何形成的。以往有相似的星系被鋻定出來，竝都被歸類爲(wèi)環(huán)形星系的一種類型。