Why is it difficult to take photos when the black hole is close
Astronomers released the first photo of the central black hole of the Milky Way galaxy, Xinhua News Agency (image provided by the event horizon telescope) the central black hole of the Milky Way galaxy is 27000 light-years away from the earth, and its size is about the same as the doughnut on the moon seen from the earth. To image it, we must ensure that the telescope is sensitive enough and the details that can be resolved are small enough, so as to ensure that we can”see” and”see clearly”.