Black Holes
The most mysterious objects in the universe, brought closer with science
In the beginning...
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Lessons
Escape speed
Practice: Squeeze a planet
How massive stars die
Practice: The life of a star
The event horizon
Practice: Find the horizon
Anatomy of a black hole
Practice: Escape or fall in
The singularity
Types of black holes
Practice: Classify the black hole
Gravitational lensing
Practice: Read the lens
Time near a black hole
Practice: Slow clocks
Spaghettification
Practice: Myth or fact
Hawking radiation
Practice: Rank by temperature
Pictures of black holes
Gravitational waves
Practice: How we know they are there
The information paradox
Practice: Known or still unknown
Course Complete
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What is a black hole?
Explore event horizons, singularities, and gravitational lensing. Learn how black holes form from dying stars, bend light and time, and challenge our understanding of physics.
