This image, released by the Korea Astronomy and Space Science Institute on March 25, 2021, shows how a supermassive black hole at the center of the M87 galaxy looks in polarized light. The Event Horizon Telescope, an international team of researchers, including the institute, unveiled the image the previous day after releasing the world's first image of a black hole in 2019. (PHOTO NOT FOR SALE) (Yonhap)
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