Average salary in Colorado: US$ 52,997. Detailed salary survey based on career, education, experience, gender, age etc. Advanced 2017/18 Survey.
Plutonium-238 has a half-life of 88 years and emits alpha particles. It is a heat source in radioisotope thermoelectric generators, which are used to power some spacecraft.
Pierre and Marie Curie, French Physicists discovered two new elements emitting radiation, polonium on July 18, 1898. and radium in December of 1898. Marie Curie named the energy emitted from uranium and thorium as radioactivity. and also invented the first instrument to measure radioactivity.