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Key numbers used

Voyager 1 speed ≈ 17 km/s (typical quoted value).

1 astronomical unit (AU) = 149,597,870.7 km.

1 year ≈ 365.25 days and 1 day = 86,400 seconds.

Convert Voyager speed to AU per year (digit-by-digit)

Seconds per year = 86,400 ×…

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