Satellite galaxies of the Milky Way usually perish in its grasp.
银河系的卫星星系通常在其范围内消亡。
Our Milky Way galaxy has two large satellite galaxies orbiting it.
有两大卫星星系环绕着我们的银河系转动。
In 1987 a star in one of the Milky Way's satellite galaxies exploded.
1987年，银河系内卫星星系的一颗恒星爆炸了。
Moving further away, we find the Milky Way isn't alone; it's accompanied by two satellite galaxies called the Magellanic Clouds.
往更远的地方去，我们发现银河并不孤单，两颗名为麦哲伦云的卫星星系陪伴着它。
Instead they are limited to directly measuring objects in orbit: the galaxy's gas and stars, as well as distant satellite galaxies and star clusters.
相反的，他们只能局限于直接测量轨道上的物体：银河系中的气体，恒星，以及较远的卫星星系和星团。
On February 23, 1987, astronomers got the next best thing: a supernova in one of the Milky Way's satellite galaxies, the Large Magellanic Cloud.
在1987年2月23日，天文学家获得了次佳的机会：银河系的卫星星系“大麦哲伦云”中，发生了一次超新星爆发。
On February 23, 1987, astronomers got the next best thing: a supernova in one of the Milky Way 's satellite galaxies, the large Magellanic cloud.
在1987年2月23日，天文学家获得了次佳的机会：银河系的卫星星系大麦哲伦云中，发生了一次超新星爆发。
Astronomers once assumed they had always orbited the Milky way at approximately their current distances, like the other, lesser satellite galaxies in the Milky way's gravitational thrall.
天文学家曾经假设它们总是像其它银河系引力束缚下更小的卫星星系的星云一样，在它们目前近似地距离上围绕银河系的轨道运行。
Both satellite galaxies resemble the ones that smashed together long ago to create giant galaxies like our own, so the discovery helps illuminate how such galactic building blocks formed and evolved.
两个环绕星系都类似于很久以前撞在一起形成巨型星系(如银河系)的较小星系，所以该发现有助于说明我们星系的构筑材料是如何形成和演化的。
New results from a premier sky survey by NASA's Swift satellite at hard (energetic) X-ray energies now solidly show a strong association of AGN with merging galaxies, though.
不过现在NASA的雨燕卫星在硬（高能）X射线的巡天新成果可靠地显示活动星系核与星系合并的紧密联系。
Studying the photo taken by the satellite, he discovered that there are millions of galaxies and each of which are different and has its unique feature.
而从卫星传回来的照片中，他发现了成千上万的银河系，各具特色的呈现天际。
Studying the photo taken by the satellite, he discovered that there are millions of galaxies and each of which are different and has its unique feature.
而从卫星传回来的照片中，他发现了成千上万的银河系，各具特色的呈现天际。
应用推荐