The giant stars orbiting the supermassive black hole at the centre of the Milky Way Galaxy
Supermassive black hole in the centre of the Milky Way. It is surrounding by concentric rings of rapidly expanding matter, evidence of a massive explosion.
The supermassive hole and its environs has been observed by the telescopes of the Terragen Civilisation for ten thousand years, and conclusive evidence indicates that Sgr A* is the hub of an advanced civilisation, assigned the label HEEC2.
Several long-distance missions have departed towards Sgr A*, but will not arrive for tens of thousands of years.
Supermassive Black Hole - Text by M. Alan Kazlev The hypothesized power source of a quasar or active galaxy, formed by the gradual accretion of material in the center of a galaxy. In the core of the Milky Way galaxy, Sagittarius A* seems to be a similar object.