"星系碰撞"是个多义词，它可以指星系碰撞（天文现象）,星系碰撞（手机游戏）。
车轮星系呈现出一个由大小两个星系碰撞而形成的光环。
The Cartwheel Galaxy shows a ring that is the result of a collision between a small and a large galaxy.
通常星系这种乱七八糟是最近与邻近星系碰撞的结果。
Usually, galaxies this topsy-turvy result from a recent collision with a neighboring galaxy.
这颗恒星很可能是银河系几十亿前年与其他星系碰撞时最原始的一部分。
It's possible the star was originally part of the Milky Way when it collided with the other galaxy billions of years ago.
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