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        Elusive dark matter around clusters of galaxies often clumps into cigar shapes, new observations show.

The discovery could help scientists finally understand what makes up dark matter, which is the mystifying stuff thought to exist invisibly all around us. Dark matter, which could be more than five times more abundant than visible matter, is only detectable through its gravitational pull on regular material.

According to the new observations, the dark matter around many galaxy clusters is a flattened, cigar-like shape, rather than a rounded sphere.

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Category: Science