via Tumblr http://bit.ly/1SXtDNq On Apollo 12 and later Apollo missions, the scientific experiments were powered by Radioisotope Thermoelectric Generators (RTG). Here we see astronaut Alan Bean, Apollo 12 lunar module pilot, transferring 3.8 kilograms (8.4 lb) of plutonium-238 from the lunar module to the RTG. (1969) [4000 x 4164] via…