Asked • 04/11/19

What is the evidence for a supermassive black hole at the center of Milky Way?

Black holes cannot be seen because they do not emit visible light or any electromagnetic radiation. Then how do astronomers infer their existence? I think it's now almost established in the scientific community that black holes do exist and certainly, there is a [supermassive black hole](*) at the centre of our galaxy. What is the evidence for this?

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