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We have sent several spacecraft on trajectories that will ultimately take them into interstellar space (Pioneer 10 and 11, Voyager 1 and 2, New Horizons). How long will it take these spacecraft to travel
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We have sent several spacecraft on trajectories that will ultimately take them into interstellar space (Pioneer 10 and 11, Voyager 1 and 2, New Horizons). How long will it take these spacecraft to travel as far as the nearest stars?

User Miguel Ventura
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The closest star to our solar system is the Proxima centauri (divided into Alpha century A and Alpha century B).
It will take 4.367 light years to reach those stars. Which is 4.122 × 10^13kilometres.
Meaning it will be years before those spacecraft reach them.
User Tvm
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