"Black holes are often described as voracious and monstrous, with sloppy eating habits that cause X-rays to be coughed up and spat out willy nilly." No matter were black holes live, they have a bunch of cooking habitat. Also, giant black holes (also called supermassive black holes) anchor many galaxies, But also "feed just like smaller stellar black holes..." There is a gallaxy called the spiral gallaxy which is about 12 million light years from earth. In the center of this gallaxy called M81 there is a black about 70 million times bigger than the sun! "It pulls gas from the central region of the galaxy inward at high speed." Stellar black holes pull gas from an orbiting companion star."In both cases, when black holes dine, material spirals inward and becomes superheated, giving off X-rays and other forms of radiation. Large black holes are thought to play an important role in galaxy formation and evolution, by learning more about black holes scientists can better understand how galaxies came to be."
http://www.livescience.com/space/080623-mm-black-holes.html
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