a group of stars that are in the sky

Hubble Optical Image of Hercules A (3C 348) Caption This Hubble Space Telescope composite of V and I filters shows the active galaxy 3C 348, also known as Hercules A. The Hubble data were taken in October of 2012. Credits NASA, ESA, S. Baum and C. O'Dea (RIT), and the Hubble Heritage Team (STScI/AURA)