Powering Space Probes

Discover how radioisotope thermoelectric generators (RTGs) harness the thermoelectric effect to provide long-lasting power for space probes venturing beyond Mars. Plutonium 238, the key isotope used in these generators, offers a unique solution for deep space missions where solar energy is insufficient. Despite its toxicity and radioactivity, plutonium is crucial for exploring the outer solar system, highlighting the challenges and innovations in space exploration technology.