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Is our galaxy one of the first

  1. Jun 22, 2005 #1
    To form, is it one of the oldest?
     
  2. jcsd
  3. Jun 22, 2005 #2
    Yes, it appears it is.


    http://www.eso.org/outreach/press-rel/pr-2004/pr-20-04.html
     
  4. Jun 23, 2005 #3

    Chronos

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    Good link, Vast. And that should not be surprising. Large spiral galaxies like ours appear to be quite mature.
     
  5. Jun 23, 2005 #4

    Nereid

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    Also note that today's MW galaxy is likely a very different critter than the one which formed soon after the Dark Ages ended. For starters, most of the stars which make us look like a spiral are very young; for seconds, we've been snacking on small fry galaxies from Day One, and we're still eating!
     
  6. Jun 23, 2005 #5
    Are "Milky-way" type of galaxies common?
     
  7. Jun 23, 2005 #6

    Astronuc

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    According to Spiral Galaxies - Spirals are not the most common type of galaxy.
    Our neighboring Galaxy, M31 or Andromeda, is also a spiral galaxy. Both are in the Local Cluster.

    Milky Way Galaxy Wikipedia

    Milky Way Spiral Structure

    The Milky Way Galaxy - A Grand Design U. of Oregon

    Spiral galaxy

    Spiral galaxies

    also on Wikipedia -

    Galaxy
    List of Galaxies
    Groups or clusters of Galaxies
     
  8. Jun 24, 2005 #7

    Phobos

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    Just wanted to note for clarity that, even though they're not the most common type of galaxy, spirals are not unusual. (i.e., not a rare type)
     
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