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Published online 6 November 2003 | Nature | doi:10.1038/news031103-9

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Voyager reaches the final frontier

Astrophysicists debate whether probe has left our Solar System.

The furthest-flung piece of humanity - NASA's Voyager 1 space probe - may have gone where no man-made object has gone before. On 1 August 2002 it seems to have crossed the boundary between our Solar System and deep space beyond.

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