Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. The entire sky is seen projected on a coordinate system centered on our Milky Way Galaxy with the plane of the Galaxy running across the middle of the picture. The brightest source, the Crab pulsar , is located near the plane of the Galaxy on the far right. Moving along the plane from the Crab, more than halfway toward the galactic center, another bright gamma-ray source, the Vela pulsar , appears. Both above and below the plane, spots of gamma-ray emission due to distant active galaxies are also visible.
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