Supermassive black holes wrapped in 'thick cocoons' were misidentified
Description
Using NASA Chandra X-ray Observatory astronomers were able to correctly identify supermassive black holes in the Chandra Deep Field South (CDF-S). -- Chandra Space Telescope: Revealing the Invisible Universe: (https://www.space.com/18669-chandra-x-ray-observatory.html)
Credit: NASA/CXC/A. Hobart
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