Why Quasars are so Awesome | PBS Space Time - astrophysics/cosmology

Supermassive black holes create accretion disks,or quasars,when gas is swept into the disks.Quasi-stellar radio source 3C273 was discovered by a radio telescope in Australia.Jets of material are sometimes produced by quasars that travel near the speed of light.Quasars are also called an Active Galactic Nucleus,since they are associated with a supermassive black hole at the center of a galaxy.Quasars are so bright,we can see them at the edge of the universe.*Dr.Matt O'Dowd is an Australian astrophysicist and the presenter,writer or co-writer of PBS Space Time.*Cosmology is the study of the origin,evolution and structures of the universe.