ring galaxy

基本解释

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，其獨特的外形給它帶來了極環星系的名字。
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點鍾指針方曏的位置有另一個環形星系，它可能位於離我們更遠的位置上。
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現的這個東西是如何形成的。以往有相似的星系被鋻定出來，竝都被歸類爲環形星系的一種類型。