via Live Science
by Elizabeth Howell, SPACE.com Contributor | November 12, 2013
The most luminous objects in the universe keep getting more mysterious.
Astronomers have discovered a new type of quasar — an incredibly bright galactic core powered by a supermassive black hole — that current theory fails to predict.
Models predict that a quasar's light and heat should push nearby gas out from the center and toward the fringes of the host galaxy. The newly found quasars do demonstrate this behavior, but, surprisingly, some of the gas also appears to be falling back to the center, researchers said. [Most Powerful Quasar Discovered (Video)]