• Known Universe according to NED-D

    4,450 views 6 years ago
    NED-D Extragalactic Data - In this 3-D tour of the extragalactic universe, each spec of light represents the location of a galaxy. We're at the center looking outward. This isn't a preferred reference frame but rather a choice for plotting. 90% of all galaxies plotted with this database were located at distances less than 200 Mpc. 10% makes up the arms of the structure. It stands to reason that because most of the galaxies are at relatively small distances away from us that we would be one of these 90%. The structure was rotated such that its arms are moving faster than the speed of light, enabling us to view the large scale details of the structure. Try pausing the video and see if you would have drawn the same conclusions about its structure if it weren't being rotated. The point is that the rotation helps us to see the structure.

    This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration Show less
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