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the speed of light is so usefully human-scaled for really big distancesPermalink Look on archive.org
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australia is about half a second away. mars is a few minutes away. edge of the solar system... about an hour? other stars are years away.Permalink Look on archive.org
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corrections:diameter of the earth is 0.04ish seconds, solar system has a radius of 5hours (or much more - what counts as the edge?)Look on archive.org