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In this section, we show galaxies, clusters of galaxies, active galaxies at far out, and the whole universe observed through X-ray wavelengths. The hot universe lies over there. |
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In this section, we show galaxies, clusters of galaxies, active galaxies at far out, and the whole universe observed through X-ray wavelengths. The hot universe lies over there. |
 Normal Galaxy |
 Quasar and Active Galaxy |
 Cluster of Galaxies |
 Cosmic X-ray Background Radiation |
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