Where Does the Solar System End?

Launched in 1977 to study the Solar system's gas giant planets, Voyager 1 is still operating. Now interstellar space awaits. But where?...
12 November 2013
Presented by Matt Burnett

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Launched in 1977 to study the Solar system's gas giant planets, Voyager 1 is still operating. But now it's so far away that the Solar wind has weakened and a deluge of cosmic particles from intergalactic space is assailing it. Now interstellar space awaits. But where does the Solar system end and this new frontier begin?

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