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How could we hope to detect a black hole, as by its very definition it does not emit any light? It might seem a bit like looking for a black cat in a coal cellar. Fortunately, there is a way. As John Michell pointed out in his pioneering paper in 1783, a black hole still exerts a gravitational force on nearby objects.
— A Brief History of Time
 (book)
by Stephen Hawking
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| Language: | English |
| Submitted by: | spondulix |
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