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10 incredible images of black holes

By: Katherine Butler on Feb. 21, 2011, 12:20 p.m.
patches of light on black background

Photo: NASA/CXC/SAO

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Slingshot effect

NASA believes this image shows evidence of a recoiling black hole, caused either by two supermassive black holes colliding with each other to form a system, or it is the “slingshot effect” formed from a system that had three black holes. When stars supernova, they can leave behind a huge remnant that collapses back into itself. This means they have no volume but infinite density, making them black holes.