Have you ever wondered what dog breed Mickey’s pet, Pluto, is? Maybe it is just us, but we’ve always been curious to figure out exactly what Mickey and Minnie’s faithful companion actually is.

which is on its way to Pluto. Plutonium's in a part of the periodic table called the actinide series alongside its neighbours thorium and protoactinium. Seaborg christened the actinides, rearranging ...