The combined power of NASA's Great Observatories - the Hubble Space Telescope, the Chandra X-ray Observatory, and the Spitzer Space Telescope - have been combined to find a hidden population of supermassive black holes in the universe. It took the penetrating view of Spitzer to finally uncover the black holes and their surrounding galaxies.

Credit: NASA, ESA, A. M. Koekemoer (STScI), M. Dickinson (NOAO) and The GOODS Team