Dismiss Notice
Alien Soup is a free community for fans of science-fiction, horror, & fantasy! Everybody is welcome here.

NGC 1316: After Galaxies Collide

Discussion in 'Tech, Science, and Space' started by Robby, Sep 2, 2008.

  1. Robby

    Robby The Robot

    Joined:
    Jul 28, 2004
    Location:
    Terra
    NGC 1316: After Galaxies Collide

    [​IMG]


    NGC 1316: After Galaxies Collide
    Credit & Copyright: Martin Pugh

    Explanation: Astronomers turn detectives when trying to figure out the cause of startling sights like NGC 1316. Their investigation indicates that NGC 1316 is an enormous elliptical galaxy that started, about 100 million years ago, to devour a smaller spiral galaxy neighbor, NGC 1317, just above it. Supporting evidence includes the dark dust lanes characteristic of a spiral galaxy, and faint swirls of stars and gas visible in this wide and deep image. What remains unexplained are the unusually small globular star clusters, seen as faint dots on the image. Most elliptical galaxies have more and brighter globular clusters than NGC 1316. Yet the observed globulars are too old to have been created by the recent spiral collision. One hypothesis is that these globulars survive from an even earlier galaxy that was subsumed into NGC 1316.



    (Via NASA)
     

Share This Page