The central black hole discovered by Ghez is often referred to by what name?
Gargantua
Taurus A
Sagittarius A*
Cygnus X-1
Answer
The supermassive black hole at the center of our galaxy, the Milky Way, is known as Sagittarius A* (Sgr A*). It resides approximately 26,000 light-years away from Earth and possesses an estimated mass several million times that of our Sun.
Stargazing Brilliance: The Andrea M. Ghez Astronomy Challenge