According to Wikipedia [0] it isn't all sorrows. There are other fuels available in large quantities at a low price, like Strontium-90 used in many Russian radi

According to Wikipedia [0] it isn't all sorrows. There are other fuels available in large quantities at a low price, like Strontium-90 used in many Russian radioisotope thermoelectric generators. Other fuels like Americium-241 are also showing big promise, and are available commercially in large quantities. Americium-241 also has a much longer half-life, and can hypothetically power a device for centuries. 0: https://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator#Fuels https://en.wikipedia.org/wiki/Radioisotope_thermoelectric_ge...