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HubbleSite Galaxy Drift Challenges Ideas About Universe's Evolution

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Space Telescope Science

Two astronomers have discovered that our own Milky Way galaxy and most of its neighboring galaxies, contained within a huge volume of the universe, one billion light-years in diameter, are drifting with respect to the more distant universe. This startling result may imply that the universe is "lumpier" on a much larger scale than can be readily explained by any current theory. "The new observations thus strongly challenge our understanding of how the universe evolved," says Dr. Tod Lauer of the National Optical Astronomy Observatories (NOAO).

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