Intergalactic Gas Brings Supermassive Black Holes At Heart Of Galaxies To Life

In the outer regions of the Milky Way, our blue planet rotates in its orbit around the Sun, the massive center of our Solar System. 26,000 light-years away, a supermassive black hole known as Sagittarius A* is at the center of our galaxy. It is a sleeping giant with a mass 4.3 million times greater than our sun.

Black holes...