Comment Wonder what minimum power level is for probe (Score 2) 22
"In order to conserve the probes' remaining energy"
Small nitpick here is that you cannot really conserve the nuclear batteries, they simply offer less power over time as the plutonium continues to be lost to decay, and the probe just has lower and lower amounts of power it can make use of.
It makes me wonder if the rated 60 years of battery life is really the floor, or if the probe can operate beyond that time with significantly reduced power from the batteries.
I found some interesting calculations on RTG battery decay here, which notes that Voyager batteries are decaying at a fixed rate of 1.7% per year, and are currently at 67% of the initial power provided. So how much longer can the Voyager's systems live as the power drops...