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archlich t1_j1h0slq wrote

Reply to comment by jazzofusion in Did you know it will still take 46 billion years to cross the universe at the speed of light? 65 mph = 4.8 * 10^17 years! by NotAndroid545

We’ve observed distant galaxies moving farther away from us. If we calculate the speed they’re going away from us then we can approximate the beginning of the universe. What happened before that time is unknowable.

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