Voyager 2 science experiment shut down to preserve power

Voyager 2, headed into interstellar space 13 billion miles from Earth, is running low on power. To conserve it, the NASA team in charge of the iconic explorer is shutting down scientific instruments.

Mission engineers sent a command to shutter the Voyager 2's Plasma Science, or PLS, experiment — which was used to observe solar winds — on September 26 using the Deep Space Network, a series of massive radio antennae that can beam information billions of miles through space.

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