Protoquasar

A protoquasar was a gigantic star-like occurance that lived only a few hundred years but was massive enough to bring an entire galaxy into orbit around it. They occored in irregular galaxies, where there was sufficient lack of movement for gravity to draw millions of stars and nebulae towards one another. These merged to form a huge fiery cloud. This cloud would eventually ignite as a star, but a star so massive it outshone the rest of the galaxy. The gravity of the protoquasar organized the irrgular galaxy into a mature spiral galaxy. In only a few centuries, the gargantuan star would collapse to form a supermassive black hole, which would last forever in the galaxy. What gas was left from the protoquasar would be sucked into the hole as a quasar

The Galaxy was drawn together by a protoquasar.