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Jan 16, 2020

[Answer] What year was the first black hole discovered?

Step 1 : Introduction to the question "What year was the first black hole discovered? "



...1. 1943 2. 1956 3. 1971 4. 1986




Step 2 : Answer to the question "What year was the first black hole discovered? "



1971 - Black holes were theorized to exist all the way back in 1916, appearing in Albert Einstein's general theory of relativity, but they were purely hypothetical at that point. In fact, the term \"black hole\" didn't even exist then; astronomer John Wheeler came up with it in 1967. A few years later, in 1971, scientists finally found their first physical black hole deep in space. Ever since, these supermassive gravitational pits have remained mysterious. An actual photo of a black hole wasn't captured until 2019 when the Event Horizon Telescope came across one sitting in the center of galaxy M87. What makes them so hard to find? Their extreme density and intense gravitational pull suck in anything close enough — including light, making photography extraordinarily difficult.:


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