At the heart of almost every galaxy, including our own, is a monstrously large black hole with mass millions or billions of times that of the sun. These supermassive black holes are generally lonely ...

NASA observed the closest confirmed pair of supermassive black holes this week within the gas-rich galaxy MCG-03-34-64. The duo — described rather poetically as ‘two Sumo wrestlers squaring off’ — was ...

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Astronomers have discovered the closest pair of supermassive black holes to Earth. Not only are they the most proximate objects of this type to our planet, but they are also closer to each other than ...