NASA: Probe Habitat of Monster Black Hole

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NASA: Probe Habitat of Monster Black Hole
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A mysterious and intense X-ray source near the black hole shines onto the surface layers of the accretion disk, causing iron atoms to radiate characteristic emission -- what astronomers call the iron K line -- at about 6,000 to 7,000 electron volts. The inner part of the disk is orbiting the black h...
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Category: space exploration
Date: 2012-05-31 16:10:59
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