The supermassive black hole at the center of our galaxy suddenly lit up brighter than scientists had ever seen, and nobody knows why

The supermassive black hole at the center of the Milky Way galaxy suddenly flashed twice as brightly as scientists had ever seen in 20 years of observation. Nobody knows what caused the flash, but two objects that passed near the black hole in 2014 and 2018 could be the culprits. The flash was so bright that researchers want to update models of how the black hole fluctuates over time. Visit Business Insider’s homepage

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