The White Dots in This Image Are Not Stars or Galaxies. They're Black Holes

Astronomers Make a Weird Discovery: A Concentration of Smaller Black Holes Lurking Where They Expected a Single Massive Black Hole

Astronomers publish map showing 25,000 supermassive black holes. The new map was created by combining 256 hours of observations of the northern sky. The researchers deployed supercomputers with new algorithms that correct the effect of the ionosphere every four seconds.

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