卫星星系

有两大卫星星系环绕着我们的银河系转动。

Our Milky Way galaxy has two large satellite galaxies orbiting it .

它带着两个卫星星系在空间穿梭，卫星星系是不规则的小麦哲伦星云。

It travels in space with two satellite galaxies , the irregular little Clouds of Magellan .

Segue2是围绕着银河系运转的数十个卫星星系的其中之一。

Segue 2 is one of dozens of " companion " galaxies that orbit the Milky Way .

这次研究找到了两个类似的星系：每个星系均像银河系一样，环绕着能与麦哲伦云相媲美的卫星星系。

The search turned up two close replicas : each with a Milky Way-like galaxy accompanied by two galaxies comparable to the Magellanic Clouds .

现今，一项新的研究发现银河系及其卫星星系是不同寻常的组合。但也不是独一无二的。

Now a new study finds that the Milky Way and its companion galaxies are an unusual combination , but they 're not one of a kind .

研究人员首先使用哈勃太空望远镜来跟踪狮子座白矮星一号，它距离银河系85万光年，是围绕银河系运转的最远的卫星星系。

The researchers first used the Hubble Space Telescope to track the dwarf galaxy Leo I , which at 850000 light-years away is one of the most distant of the satellite galaxies swarming around the Milky Way .