[nategri]

Sounds like it might be a good pick as the energy source for an extremely long haul interstellar probe?

[FrojoS]

It's already used (minus the diamond casing), e.g. in the Curiosity mars rover, or the Voyager probes

https://en.wikipedia.org/wiki/Curiosity_(rover)#Specificatio... https://en.wikipedia.org/wiki/Radioisotope_thermoelectric_ge...