NASA is making sacrifices to keep the Voyager mission alive

It’s been 47 years since the twin Voyager spacecraft started their historic mission. Having travelled through interstellar space, farther from Earth than any other human-made objects, their nuclear batteries are depleting — but NASA is taking measures to squeeze as much life out of the aging probes as possible. The Voyagers’ radioisotope power system loses around 4 watts each year, so to preserve power, NASA engineers have been shutting down some of the science instruments carried by each probe. Voyager 1’s cosmic ray subsystem experiment was turned off on February 25th. When the low-energy charged particle instrument aboard Voyager 2 is shut down on March 24th, both spacecraft will have three out of the ten identical science instruments they launched with remaining operational. “Electrical power is running low,” said Voyager project manager, Suzanne Dodd. “If we don’t turn off an instrument on each Voyager now, they would probably have only a few more months of power before we would ... Read full article.