Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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.

  4. Jun 23, 2005 #3


    User Avatar
    Science Advisor
    Gold Member

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


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    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


    User Avatar

    Staff: Mentor

    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 -

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


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    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)
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Is our galaxy one of the first
  1. BH in our galaxy (Replies: 2)

  2. Picture of our galaxy (Replies: 35)

  3. Centre of our Galaxy (Replies: 25)