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How often do giant black holes become hyperactive

post from Machines Like Us - Science at the speed of thought on 20 December 2010 10:29:37 PM. © Machines Like Us - Science at the speed of thought

A new study from NASA's Chandra X-ray Observatory tells scientists how often the biggest black holes have been active over the last few billion years. The object could help scientists better understand how massive stars explode, which ones leave behind black holes or neutron stars, and how many black holes are in our galaxy and others.

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