July 13th, 2011
11:00 AM ET

Glossary: supermassive black hole

The largest type of black hole in a galaxy, believed to exist at the center of most if not all galaxies, including the Milky Way.


Filed under: Glossary
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Contributors

  • Elizabeth LandauElizabeth Landau
    Writer/Producer
  • Sophia DengoSophia Dengo
    Senior Designer