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Space Anemic Galaxy NGC 4921 at the Edge

Discussion in 'Tech, Science, and Space' started by Robby, Feb 9, 2009.

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  1. Robby

    Robby The Robot

    Joined:
    Jul 28, 2004
    Location:
    Terra
    NASA Astronomy Picture Of The Day
    Anemic Galaxy NGC 4921 at the Edge


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    Anemic Galaxy NGC 4921 at the Edge
    Credit: NASA, ESA, K. Cook (LLNL)

    Explanation: How far away is spiral galaxy NGC 4921? Although presently estimated to be about 320 million light years distant, a more precise determination could be coupled with its known recession speed to help humanity better calibrate the expansion rate of the entire visible universe. Toward this goal, this image was taken by the Hubble Space Telescope in order to help identify key stellar distance markers know as Cepheid variable stars. Since NGC 4921 is a member of the Coma Cluster of Galaxies, refining its distance would also allow a better distance determination to one of the largest
     
  2. painkiller64

    painkiller64 Avoid A Void

    Joined:
    Sep 15, 2006
    Location:
    kansas
    isnt it amazing to see this image. viewing this as it was approx 320 million years ago. if only we could travel there now to see what it is like.
     

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