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.

See the Milky Way's Sagittarius A* black hole in an amazing polarized Event Horizon Telescope image - Space.com - astrophysics

A view of Sagittarius A*,the supermassive black hole at the centre of our Milky Way galaxy,is presented by the European Southern Observatory (ESO).It was taken by the Event Horizon Telescope,a global network of radio telescopes including one operated by ESO at Atacama,Chile.The new polarised image of Sgt A* is similar to the image of the supermassive black hole at the centre of the M87 galaxy because they both have strong magnetic fields.Despite what the video says,Sagittarius A* is in a quiescent mode now,not eating much of anything.Credits:ESO,University of Arizona

AI is helping us search for intelligent extraterrestrial life - Astronomy magazine - radio astronomy

AI is helping us search for intelligent extraterrestrial life: AI’s ability to identify ‘technosignatures’ missed by classical algorithms is an exciting step forward for radio astronomers.