The absence of X would mean there's some other oddity out there throwing off the calculations—perhaps an unexpected distribution pattern of the halo of dark matter thought to surround the Milky Way.

如果X星系不存在，这将说明存在其他的问题导致这样的计算结果，也许是一个意料之外分布模式——这些暗物质本认为环绕着银河系分布。

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Hubble's cluster Lensing and Supernova Survey - CLASH - is charting the distribution of dark matter in 25 clusters.

哈勃的集群透镜和超新星调查显示将暗物质的分布分成了25个部分。

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This will considerably improve our understanding of the distribution of the "hidden" dark matter in the clusters, and in the Universe as a whole.

这将大大改善我们的认识，分配的“隐性”暗物质在集群，并在宇宙作为一个整体。

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Since both are affected by gravity they are attracted to each other, so the distribution of normal, visible matter acts as a proxy for the distribution of dark matter.

ECONOMIST: Astronomy

Two further refinements were necessary: to work out the third dimension distance from Earth and to subtract the effect of visible matter in order to be left with the distribution of dark matter pure and simple.

ECONOMIST: Cosmology: I spy with my little gravitational lens | The

In the new image, the full-scale distribution of vast clumps of dark matter can be seen around galaxy clusters, connected by wispy filaments of dark matter and trailing off to enormous voids where no matter exists.

BBC: Dark matter hints in widest-yet view of dark mystery