Engineers are confident that shutting down the LECP will give Voyager 1 about a year of breathing room. They are using the time to finalize a more ambitious energy-saving fix for both Voyagers they call “the Big Bang,” which is designed to further extend Voyager operations. The idea is to swap out a group of powered devices all at once — hence the nickname — turning some things off and replacing them with lower-power alternatives to keep the spacecraft warm enough to continue gathering science data.
RTGs are subject to the issue of half-life - this is a consequence of that type of power source. Though, let’s be honest: we do not have any other sort of power generation technology that would be viable for literal decades on an interstellar space probe. And we definitely didn’t have a better alternative when they were launched.
For roughly three milliseconds I thought to myself they shoulda used solar panels instead.
“Oh, wait…”
Well they could power a lamp that shines on the solar panels.
This photo was taken after Voyager was launched, NASA didn’t have the technology yet
Use the heat from the lamp to boil some water and you’re in business.
Just use two of them!