https://www.vice.com/en_us/article/z3mnee/scientists-have-solved-a-mystery-about-the-most-powerful-objects-in-the-universe-quasars

Scientists have solved a major mystery about the most radiant and powerful objects in the universe, known as quasars, which are trillions of times brighter than the Sun and sit at the center of active galaxies, reports a new study.

The new research revealed that some quasars are triggered by collisions between galaxies, an epic process that hurls gas and dust into the supermassive black holes that exist at galactic centers. As hungry black holes gobble up these gassy meals, they unleash huge beams of energy that can be seen from across the observable universe. Some of these beams are pointed toward Earth, creating an optical illusion that makes them appear to break the laws of physics.