An image of infrared point sources in the entire sky as seen by the Infrared
Astronomical Satellite (IRAS). The plane of our Galaxy runs horizontally
across the image. Sources are color coded by their infrared colors. Blue
sources are cool stars within our Galaxy, which show an obvious
concentration to the galactic plane and center. Yellow-green sources are
galaxies which are basically uniformly distributed across the sky, but show an
enhancement along a great circle above the
galactic plane. This enhancement is caused by galaxies in the Local Supercluster.
Reddish sources, the infrared cirrus, are extremely cold
material close to us in our own Galaxy. Black areas were not surveyed by
IRAS. The map was produced with an Aitoff projection.
INFRARED PROCESSING AND ANALYSIS CENTER