Pan: Everything, in one place, all at once

This luminous Picture of the Week shows Z 229-15 — imaged here in beautiful detail by the NASA/ESA Hubble Space Telescope — a celestial object that lies about 390 million light-years from Earth in the constellation Lyra. Z 229-15 is one of those interesting celestial objects that, should you choose to research it, you will find defined as several different things. sometimes as an active galactic nucleus ; sometimes as a quasar ; and sometimes as a Seyfert galaxy .