For the first time in history, a man-made object has left the solar system. Voyager I is officially out of here. After one stormy year traveling through plasma on the edge of the heliosphere, the 36-year-old spaceship is now 12 billion miles (19 billion kilometers) from the Sun. Today, more than ever, Humanity is on its way to the stars.


Its instruments' readings—powered by a plutonium battery and a computer with an infinitesimal fraction of the power of a smartphone—now show that Voyager I is in interstellar space.

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