One of NASA’s continuously longest running interplanetary missions had one more instrument turned off last month, in an effort to keep the Voyager 1 mission operational. The switch off occurred on April 17th, When controllers opted to turn off the Low-Energy Charged Particle Experiment (LECP) instrument which had been operating near continuously for 49 years. The LECP records low-energy charged particles in the interstellar medium, and is vital to measuring particle density in the region beyond our heliosphere. Here’s our latest post on the mission for Sky & Telescope magazine: https://skyandtelescope.org/astronomy-news/voyager-1-shuts-down-another-instrument/