Galaxy IC 4870 imaged by the NASA/ESA Hubble Space Telescope. IC 4870 is located approximately 28 million light-years away from Earth and contains an active galactic nucleus (AGN). AGNs are extremely luminous central regions of galaxies that can outshine all the stars in the rest of the galaxy. AGNs emit radiation across the complete electromagnetic spectrum, from radio waves to gamma-rays, produced by the action of a central supermassive black hole. IC 4870 is also a Seyfert galaxy, a particular kind of AGN with characteristic emission lines. The foreground of this image contains nearby stars with four pointed diffraction spikes.