One of the largest X-ray surveys using the European Space Agency's XMM-Newton space observatory publish initial findings mapping the growth of 12,000 supermassive black holes at the cores of galaxies and galaxy clusters.
One of the largest X-ray surveys using the European Space Agency's XMM-Newton space observatory publishestheir initial findings mapping the growth of 12,000 supermassive black holes at the cores of galaxies and galaxy clusters.
