It took two years for light to flush the first black hole photograph of human beings,break the understanding of the universe

Anecdote

On April 10,2019,astronomers released the first black hole photograph in human history.The first black hole photograph in history was born. This is the first time that we have actually seen black holes and confirmed their existence.Black holes are a special kind of celestial bodies.The gravitational force near them is very strong.The light on the surface will also be attracted so that it can not radiate.This surface is called the visual interface of black holes.Light waves are also absorbed. This is why black holes are black.