If you could, the sky would seem to be filled with a shimmering high-energy glow from the most exotic and mysterious objects in the Universe . In the early 1990s NASA's orbiting Compton Observatory , produced this premier vista of the entire sky in gamma rays - photons with more than 40 million times the energy of visible light . The diffuse gamma-ray glow from the plane of our Milky Way Galaxy runs horizontally through the false color image. Above and below the plane, quasars , believed to be powered by supermassive black holes , produce gamma-ray beacons at the edges of the universe. The nature of many of the fainter sources remains unknown .
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