Radioisotope thermoelectric generators do not rely on chemical reactions like the batteries in your phone. Instead, they rely on the radioactive decay of elements to produce heat and eventually ...

Plutonium is produced from reprocessing spent nuclear fuel, which, as BBC describes, can be seen through thick, leaded glass with a yellowish glow, confirming its high radioactivity.

To mimic the Core’s deadly blue glow, the build uses cheap LED modules ... smart enough not to tinker with 6.2 kilograms of plutonium and a screwdriver. That’s not to say there aren’t ...