Inside black holes
Chapter 1
The anatomy of a black hole
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Chapter 2
The four cosmic families
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Chapter 3
Extreme physics and spaghettification
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Chapter 4
Photographing the invisible
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YOUR GOAL
Master of Inside black holes
Ch 1 · The anatomy of a black hole
Fun Fact
Gravitational lensing: Black holes bend light like a cosmic magnifying glass, warping the image of stars behind them.
Glossary
event horizon (noun)
The boundary surrounding a black hole from which no matter or radiation can escape. In 2022, the Event Horizon Telescope captured the first direct image of this boundary around Sagittarius A.
The boundary surrounding a black hole from which no matter or radiation can escape. In 2022, the Event Horizon Telescope captured the first direct image of this boundary around Sagittarius A.
Quiz
At what speed would an object need to travel to escape a black hole once inside the event horizon?
Quiz
What optical effect occurs when a black hole's gravity bends light from stars behind it?
Quiz
Whose theory of general relativity predicted the mathematical possibility of black holes?