Observations of a distant galaxy cluster collision reveal a core of invisible matter devoid of glittering galaxies-something that is hard to explain by current theories.
对遥远的星系团碰撞进行观察后，发现了一个不可见物质的核心，然而其中没有星光闪烁的星系，这用目前的理论是难以解释的。
Other calamities will befall the sun (and Earth) in the distant future, but a collision with a nearby star is not likely to be one of them.
在遥远的未来，的确是会有些什麽样的灾难降临到太阳（以及地球）上，但其中不大可能会有与邻近恒星碰撞这一项。
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