仙女座星云- - - - - -银河中距离地球最近的星云- - - - - -在大多数精细的远红外线照片中犹如一个燃烧的漩涡，发表于星期三。
The Andromeda galaxy burns like a blazing whirlpool in the most detailed infrared picture yet of our nearest full-size galactic neighbor, released Wednesday.
引力逐渐把密集的大区域星云气体拉拢，形成那些巨大、漩涡状结构的所谓星系群。
The force of gravity starts to pull together huge regions of relatively dense cosmic gas, forming the vast, swirling collections of stars we call galaxies.
另一方面，这些星云看上去并不像结构松散的球状矮星系一样紧紧地围绕银河系和其它主要的漩涡星系的轨道运行。
For another, the clouds don't look like the disheveled spheroidal dwarf galaxies that closely orbit the Milky Way and other major spirals.
星云由发光的气体组成，其间夹杂暗色的尘埃。这种明暗相间的组成标示了银河系缓慢的漩涡运动。
Clouds of stars are glowing gas, with patches of darkening dust, mark the slow-changing spiral patterns of the Galaxy disk.
星云由发光的气体组成，其间夹杂暗色的尘埃。这种明暗相间的组成标示了银河系缓慢的漩涡运动。
Clouds of stars are glowing gas, with patches of darkening dust, mark the slow-changing spiral patterns of the Galaxy disk.
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