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To: TimF who wrote (917)	3/29/2018 2:52:31 PM
From: Road Walker	Read Replies (1) of 935

Astronomers think coronas have one of two likely configurations. The "lamppost" model says they are compact sources of light, similar to light bulbs, that sit above and below the black hole, along its rotation axis. The other model proposes that the coronas are spread out more diffusely, either as a larger cloud around the black hole, or as a "sandwich" that envelops the surrounding disk of material like slices of bread. In fact, it's possible that coronas switch between both the lamppost and sandwich configurations. So... it’s not science because it’s can’t be tested and proved?

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