ring galaxy

基本解释

Over 20 million light-years away, its peculiar appearance marks it as a polar ring galaxy.
它距我们超过 2 千万光年之远，其独特的外形给它带来了极环星系的名字。
Coincidentally, visible in the gap (at about one o'clock) is yet another ring galaxy that likely lies far in the distance.
请注意在黑暗间隙大约1点钟指针方向的位置有另一个环形星系，它可能位于离我们更远的位置上。
How Hoag's Object formed remains unknown, although similar objects have been identified and collectively labeled as a form of ring galaxy.
我们还不知道霍格发现的这个东西是如何形成的。以往有相似的星系被鉴定出来，并都被归类为环形星系的一种类型。