What kind of object do we think lies in the center of the Milky Way Galaxy?
A)a 3- to 4-million-solar-mass black hole
B)a gigantic X-ray binary system
C)a dense cluster of young,hot stars
D)an enormous collection of dark matter,which explains why we detect no light at all from the galactic center

Question

Quizplus · Accepted Answer

Observations of the movements of stars near the center of the Milky Way have strongly suggested the presence of a supermassive black hole, estimated to be 3-4 million times the mass of the Sun.

What Kind of Object Do We Think Lies in the Center