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First spiral galaxy in early Universe stuns astronomers

Discussion in 'General Discussion' started by Archean, Jul 21, 2012.

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  1. Archean TechSpot Paladin Posts: 5,735   +27

    First spiral galaxy in early Universe stuns astronomers

    Astronomers have spotted the earliest known spiral galaxy, dating to just three billion years after the Big Bang. Theories of galaxy formation held that the Universe was still too chaotic a place to allow such a perfectly formed or "grand-design" spiral to form.

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    It should take far longer for gravity to bring matter into thin, neat discs. But a team reporting in Nature says the galaxy BX442 got the gravitational "kick" it needed to form a spiral from a smaller "dwarf galaxy" orbiting it.
    Archean, Jul 21, 2012
    #1

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