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 Old galaxies huddled together in clusters were once dismissed as the rest homes of the cosmos, but scientists reported on September 13, 2002 that many of them have massive black holes gobbling gas at their cores. Shown is a Chandra X-ray Observatory image of the Abell 2104 cluster of galaxies. The image reveals X-ray emissions produced by both hot gas (the blue area near the center of the image) and by accretion of dust and gas onto supermassive black holes (the smaller blue patches on the outskirts of the image). (NASA, Carnegie Observatories via Reuters) Got any interesting photos? Send them to Times@iranian.com
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