The expansive seagull ( upper left ) is itself composed of two major cataloged emission nebulae .
广阔的“海鸥”（左上）本身由两个较大的被编目的发射星云组成。
Alien scientists would have cataloged all of them as potentially habitable .
外星科学家在那时就可能因为他们可居住而把他们全部分类。
In the past 10 years , we 've seen the web morph from this linear , cataloged file cabinet of information , to being partitioned by gated social sites .
在过去的10年里，我们目睹着物联网精灵从线性的、编目过的信息“柜子”，变为如今被各大社交网站瓜分。
About five light-years " tall " , the dark cloud is cataloged as barnard 33 and is visible only because its obscuring dust is silhouetted against the glowing red emission nebula ic 434 .
Also cataloged as ngc 5194 , m51 is a part of a well-known interacting galaxy pair , its spiral arms and dust lanes clearly sweeping in front of companion galaxy ngc 5195 ( top ) .
