From: What Is the Event Horizon of a Black Hole?
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How do scientists study something they can’t see directly, like the event horizon?

Scientists look for clues around the event horizon, like light from hot gas falling in. This teaches us to find indirect evidence when direct observation isn’t possible, a useful skill in many areas.

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Try solving a puzzle using clues rather than direct answers, like a mystery game or riddle.

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4 evidence blocks4 perspectives5 visualizations11 media resources7 rabbit holes
evidence
The size of the event horizon is called the Schwarzschild radius.
evidence
The event horizon marks the boundary around a black hole beyond which nothing can escape.
evidence
No information or matter can escape from inside the event horizon.
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What Is the Event Horizon of a Black Hole?
Evidence, perspectives, rabbit holes, and more