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Astronomers Map the Shape of a Black Hole's Corona for the First Time
The Sun is surrounded by the corona, a region of superheated gas above the surface that can be millions of degrees. Black holes have them too, but they can be billions of degrees. Astronomers have used NASA's IPXE mission to map the shape of a black hole corona for the first time. They found the corona matches the shape of the accretion disk feeding material into the black hole, and not a giant sphere that surrounds the region.
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