Well, there's been a few accidents involving these things, including Apollo 13. They're designed to survive reentry. http://en.wikipedia.org/wiki/Radioisotope_t

Well, there's been a few accidents involving these things, including Apollo 13. They're designed to survive reentry. http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_gen...