Tag: black holes
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The disappearing-reappearing black hole
In astronomical terms, human lifetimes pass by in a blink. As a result, many cosmic phenomena are ponderously slow from our perspective. So, when something happens quickly, astronomers take notice. That’s the case where a black hole in a distant galaxy seemed to nearly vanish, dropping in brightness by more than 90% within the span…
Galileo's Pendulum 