A billion years ago and a billion light-years away in the galaxy ­PG211+143, matter was observed falling into a black hole at 30 percent the speed of light. | Harper's Magazine

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A billion years ago and a billion light-years away in the galaxy ­PG211+143, matter was observed falling into a black hole at 30 percent the speed of light.

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A billion years ago and a billion light-years away in the galaxy ­PG211+143, matter was observed falling into a black hole at 30 percent the speed of light.

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