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In a first, astronomers watch a black hole's corona disappear, then reappear - Phys.org 17-Jul-2020

In a first, astronomers watch a black hole's corona disappear, then reappear - Phys.org


It seems the universe has an odd sense of humor. While a crown-encrusted virus has run roughshod over the world, another entirely different corona about 100 million light years from Earth has mysteriously disappeared.

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