Who can tell me why the bright area of black hole is asymmetrical and exist below ?
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It's not a picture of the black hole; it's a picture of the shadow of the black hole. The black hole itself is surrounded by a disc of gas that is so hot it's glowing — which we assume is because the black hole is pulling on the disc so hard that its particles must be going really fast to be able to stay outside of the black hole, which means that any collisions are really energetic and heat up the gas like crazy. And the light from that glowing disc is what the picture is showing. But before the light gets to us, it gets warped by the black hole, and some of it gets swallowed up by the black hole. Some of the disc is apparently closer to us, and therefore not blocked — and partially warped by the black-hole's spin.
Mike
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