NASA’s shrinking solar system

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NASA is redrawing models of our solar system as their Voyager 1 spacecraft reaches the cusp of interstellar space ahead of schedule. But this isn’t the first time the Voyagers have disrupted scientific prediction and theory. Launched in the summer of 1977, the Voyager 1 and Voyager 2 were originally intended for four-year missions to observe Saturn and Jupiter.

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