A Black Hole ‘Choir’

On a field of black there are small yellow and red dots spread across the image. About a dozen larger, blue dots are scattered amongst the smaller, paler sources.
July 28, 2016
Historical DateJuly 28, 2016
  • english

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. The black holes were detected by NASA's Nuclear Spectroscopic Array, or NuSTAR, which spotted 32 such black holes in this field and has observed hundreds across the whole sky.