仙女星系是距银河最近的巨型旋涡星系，它以其所在星座仙女座命名，同时又被称为M31，它是本星系群中最大成员。
The nearest major spiral galaxy to the Milky Way, Andromeda, named after its constellation and also known as M31, is the largest galaxy in the Local Group of Galaxies.
碰撞中的触角星系，太空中的高动力碰撞，在未来25亿年间银河系与仙女星系如果发生碰撞，也有可能产生此现象。
The colliding Antenna Galaxies, a hyperkinetic smashup in space, may approximate what will happen when the Milky Way and the Andromeda Galaxy collide in about 2.5 billion years.
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