1.银河系外的,(银)河外的
1.existing, originating, or happening outside the Milky Way, the galaxy that contains our solar system
1.Just as extragalactic astronomers were giving up on stellar collisions, their galactic colleagues adopted them with a vengeance.
正当河外天文学家放弃恒星碰撞时，他们那些研究银河系的同僚却彻底地接纳了它们。
2.Astronomer Art Hoag first asked this question when he chanced upon this unusual extragalactic object.
当天文学家阿特.霍格偶然发现这个银河系外的非同一般的物体时，他首先问出来这个问题。
3.But a bunch of strong extragalactic microwave- and radio-sources are out there too, mucking up our picture!
而且有一群强大的银河系外微波和无线电源，弄脏了我们的图片！
4."The claim that it's extragalactic is kind of a guess, " says Pravdo.
“这颗行星来自外星系的说法只是一种猜测，”普拉夫多说。
5.Although the extragalactic space is a dangerous zone, you should also annihilate all the enemies on your journey.
虽然银河系外的空间是一个危险的地域，但是，你也应该在你的旅程上消灭所有的敌人。
6.This galaxy was observed by a team affiliated with the HST Key Project on the Extragalactic Distance Scale.
星系NGC4603由隶属于哈勃太空望远镜重大项目组的“河外星系量天尺工程”团队观测。
7.For the first time, astronomers have detected a planetary system in a stellar stream of extragalactic origin.
这是天文学家首次在银河系以外的恒星流中发现一个行星系。
8.This extragalactic jet is being fueled and ejected from the vicinity of a monster black hole that is 3 billion times the mass of our Sun.
此河外星系射流是从（星系核心）30亿个太阳质量的魔鬼黑洞附近区域加热并喷射出去的。
9.a number of supernovae and one nova in extragalactic systems.
河外星系中发现了一批超新星和一个新星；
10.Stellar systems; galactic and extragalactic objects and systems; the universe
恒星系；银河和河外的物体和星系；宇宙