The idea of a black hole - an object so massive that nothing could escape the grasp of its gravity - dates back to the 1700s. But the modern story of black holes really starts with Einstein's revolutionary theory of gravity. Over the past century, scientists have used Einstein's theory of gravity to develop a picture of what black holes must be like.

See real images of actual black holes using the Resources “Inside Einstein’s Universe” or explore more about black holes with the UniverseForum here.







Black Hole Explorer Board Game
Expect the unexpected as you journey toward the center of black hole.
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Spacetime Laboratory
Explore how a planet and a black hole affect the space and time around them.
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