Bok
07-28-2016, 10:24 PM
The blue dots in this field of galaxies, known as the COSMOS field, show galaxies that contain supermassive black holes emitting high-energy X-rays.
More... (http://www.nasa.gov/image-feature/jpl/pia20865/a-black-hole-choir)
More... (http://www.nasa.gov/image-feature/jpl/pia20865/a-black-hole-choir)