The orbits of stars around the center of the Milky Way Galaxy suggest that the mass at the center of the Galaxy is about 4 million solar masses. What is believed to be the diameter of this supermassive object?

Question

Quizplus · Accepted Answer

The supermassive object at the center of the Milky Way, believed to be a black hole, has a mass of about 4 million solar masses but is compact enough that its diameter is smaller than Earth's orbit around the Sun. This indicates the extreme density and compactness characteristic of black holes.

The Orbits of Stars Around the Center of the Milky