virus: Puzzle of the Precocious Galaxies

From: Walter Watts (wlwatts@cox.net)
Date: Sat Apr 10 2004 - 21:36:04 MDT

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    The observations came as a shock—
    something like finding baby pictures
    of your father and seeing that he
    sported a mustache at age 2. When he
    examined galaxies in the distant early
    universe, astronomer Roberto Abra-
    ham of the University of Toronto found
    they were far more mature than ex-
    pected. ‘Stars are forming in some way
    that is inconsistent with our view of
    how they should be forming,” he says.
            Abraham’s team used the huge Gem-
    ini North telescope in Hawaii to search
    for extremely remote, old-looking galax-
    ies whose reddish glow would have been
    largely blotted out by Earth’s atmos-
    phere. After 120 hours of observing, the
    researchers detected more than 300
    distant galaxies. Based on the objects’
    size and color, many ol them formed
    Just 1 billion years after the Big Bang,
    far sooner than ow-rent models predict.
            Meanwhile, Povilas Palunas of the
    University of Texas at Austin and his
    colleagues have detected a huge dump-
    ing of galaxies at an even earlier era.
    Theorists believe that dark matter pro-
    vided the gravitational tug that allowed
    such structures to arise, but nobody
    can explain how it did the job so rapidly.
    As Palunas puts it, “The universe is
    growing up faster than we thought.”
    —Corey S Powell with Kathy A. Svitil

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