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The space probe Voyager 1 has been flying out of our solar system since 1977. How many kilometres does it travel in one day?

How close can you get? Make your own guess and earn points before you look at the answer.

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The answer

1.5 million kilometres

About 1.5 million kilometres a day, almost four times the distance from Earth to the Moon.

How to get there

  1. About 17 km per second
  2. × 86,400 seconds per day
  3. = about 1.47 million km per day

Source: Wikipedia: Voyager 1, about 17 km/s relative to the Sun; Lunar distance, average about 385,000 km (as of October 2026)

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