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A comment on Milky Way’s Black Hole Just Flared, Growing 75 Times as Bright for a Few Hours. Parent comment

Re:Milky Way’s Black Hole Just Flared, Growing 75 Times as B... by throwaway2048 on Wednesday August 14, 2019 @04:21AM (#20693634)
Its possible to exceed the local speed of light in many classes of material.

https://en.wikipedia.org/wiki/Cherenkov_radiation

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