The event horizon of a black hole is one of the most captivating and enigmatic concepts in astrophysics. It represents the boundary surrounding a black hole, beyond which no information or matter can escape the gravitational pull. This invisible surface marks a point of no return, where the escape velocity exceeds the speed of light. The event horizon, therefore, creates a stark divide between the observable universe and the hidden singularity at the black hole's core. Understanding the event horizon is crucial for grasping the fundamental nature of black holes and the limits of our observable universe.

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