Astronomers have stumbled upon a tremendous hole in the universe. That's got them scratching their heads about what's just not there. The cosmic blank spot has no stray stars, no galaxies, no sucking black holes, not even mysterious dark matter. It is 1 billion light years across of nothing. That's a giant expanse of nearly 6 billion trillion miles of emptiness, a University of Minnesota team announced Thursday. See the HOLE story.
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