2026-03-25 05:58:24

If we scale Earth down to a 1cm diameter ball, how large would the observable universe be?

I think the question author is actually underestimating the relative size of Earth and the universe. In meters, Earth's diameter is on the order of 1E+07(, which is 10 to the 7th power) meters. The diameter of the observable universe is 1E+27 meters. The universe is 100000000000000000000 times( larger than Earth) 20 zeros. The two differ by 20 orders of magnitude.

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