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As of March 2002, Voyager 1 was 7.7 billion miles (12.4 billion kilometers) from the Sun. That's 84 times the distance from Earth to the Sun. It's the farthest (known) human thing, and it takes about 23 hours for a radio signal, moving at the speed of light, to make the round-trip. The craft adds more than 3 Earth-Sun distances to the separation every year as it continues to speed away.

If you calculate that out it's, well, fast.