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Voyager uses plutonium 238 which has a half-life of 83 years. So after 50 years, its fuel has decayed too much and it’s running out of power. The article didn’t make that clear.
Not to be a “snob”, but chances are if you know about Voyager 1/2, you probably know that their power supplies are running out. More clarity is never bad though.
I didn’t realize this detail about them, and I’m old enough to have read about them like crazy at launch time.
Good info, I’d wondered how they were powered, but never enough to go look it up (I probably knew in 1978, but that was a few years ago).
