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Largest structure challenges Einstein's smooth cosmos

A collection of galaxies that is a whopping four billion light years long is the biggest cosmic structure ever seen.

 

The group is roughly one-twentieth the diameter of the observable universe – big enough to challenge a principle dating back to Einstein, that, on large scales, the universe looks the same in every direction.

Read more: http://www.newscientist.com/article/dn23074-largest-structure-challenges-einsteins-smooth-cosmos.html

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