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Astronomers have found a giant hole in the Universe a billion light-years across that is empty of normal matter such as stars and galaxies, as well as dark matter. Its the largest void ever found. Not only is this the biggest void ever found but scientists never expected to find one this size. Astronomers have known that (on large scales) the Universe has many voids that are empty of matter. But most of these voids are much smaller than the one found and the number of discovered voids has appeared to decrease as their size increases.

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