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To save power, NASA has switched off another scientific instrument on its long-running Voyager 2 spacecraft.
The space agency said Tuesday that Voyager 2's plasma science instrument — designed to measure the flow of charged atoms — was powered down in late September so the spacecraft can keep exploring for as long as possible, expected into the 2030s.
NASA turned off a suite of instruments on Voyager 2 and its twin Voyager 1 after they explored the gas giant planets in the 1980s. Both are currently in interstellar space, or the space between stars. The plasma instrument on Voyager 1 stopped working long ago and was finally shut down in 2007.
Four remaining instruments on Voyager 2 will continue collecting information about magnetic fields and particles. Its goal is to study the swaths of space beyond the sun's protective bubble.
Launched in 1977, Voyager 2 is the only spacecraft to visit Uranus and Neptune. It's currently more than 19.31 billion kilometers (12 billion miles) from Earth. Voyager 1 is over 24.14 billion kilometers (15 billion miles) from Earth.
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