Voyager 1 gets emergency instrument shutdown to solve escalating power crisis and give it “about a year of breathing room” — the interstellar spacecraft's nuclear power source is dying, prompting escalating countermeasures

NASA shut down Voyager 1’s LECP instrument to save power.

An unexpected drop in output from its aging radioisotope generator raised the risk of undervoltage shutdowns.

NASA and JPL are also planning broader low-power hardware swaps for Voyager 1 and Voyager 2 to extend mission life.