Public domain
A Black Hole Choir.
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
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 so far. The other colored dots are galaxies that host black holes emitting lower-energy X-rays, and were spotted by NASA's Chandra X-ray Observatory.
NASA Image and Video Library’s own descriptionCredit lineA Black Hole Choir.. NASA/JPL, 2016-07-28. Public domain. ID: PIA20865.
