News FocusAstronomy

Early Start for Lumpy Universe

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Science  11 Sep 1998:
Vol. 281, Issue 5383, pp. 1593
DOI: 10.1126/science.281.5383.1593

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A survey of the early universe just completed with the Hubble Space Telescope reveals a cosmos that looks strikingly mature considering its youth. In today's universe, gravity has swept galaxies together into vast clusters. The new survey, by a team from Carnegie Mellon University, suggests that millions of clusters could have already formed when the universe was half its current age.