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Remembering the first 'photo' of a black hole
Black holes are so outlandish that the scientists who first thought them up figured they couldn't possibly exist in reality. They form from massive, collapsed stars and are so dense that nothing can escape their gravitational pull, including light. Black holes mess with spacetime so badly that scientists have long wondered: How do these things look, exactly? We may be on the cusp of seeing one thanks to the Event Horizon Telescope, but back in 1979, Jean-Pierre Luminet created the first "image" using nothing but an early computer, lots of math and India ink.
