content: A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it. This phenomenon occurs when a massive star collapses under its own gravity, creating a singularity at its core, surrounded by an event horizon. The event horizon is the boundary beyond which nothing can return, making black holes appear completely black and invisible to the naked eye. Black holes are fascinating and mysterious objects that challenge our understanding of the laws of physics and have profound effects on the surrounding space-time.
response: Why is the dieting advice to 'eat light' so dangerous? That’s how you become a black hole. (Image:  movie 'Interstellar' where the characters are near a massive black hole, conveying the idea of being consumed by its gravitational pull.)