OK, black holes are intimidating. Because of their intense gravity, a black hole will absorb anything, and whatever falls in effectively disappears forever, making the black hole grow bigger. Our Milky Way Galaxy hosts millions of black holes between about 3 and 10 times the mass of our Sun, but also one central super-massive black hole of 4 million solar masses. Black holes in the cores of some other galaxies have grown over cosmic time to become more massive than a billion suns. Dr. Paul Green teaches some amazing facts about black holes, and also debunks a few common misconceptions. Original music by Mark C. Petersen, Loch Ness Productions. Used with permission. Animations used under Creative Commons Attribution 4.0 International License.
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