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Aging Voyager 1 Restarts a Radio it Hasn’t Used Since 1981–Prompted from 15 Billion Miles Away

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75% Informative

The Voyager 1 probe is currently 15 billion miles ( 24 billion kilometers ) from Earth .

It is now well beyond the heliosphere, the bubble of particles emitted by the Sun that extends beyond Pluto and out into interstellar space.

A days -long communication blackout was triggered after a radio command sent by Earth to turn on the probe’s heaters triggered a failsafe that shut off all non-essential functions.