The mass of the black hole in the center of the galaxy has been determined by observing the motion of stars orbiting it.

Question

Quizplus · Accepted Answer

The mass of the black hole at the center of a galaxy, such as Sagittarius A* in the Milky Way, is determined by observing the orbits of stars around it. The way these stars move allows astronomers to apply Kepler's laws of planetary motion and calculate the black hole's mass based on the gravitational influence it exerts.

The Mass of the Black Hole in the Center of the Galaxy