The European Space Agency together with the National Nuclear Laboratory are looking for a potential use of americium-241 in developing RTGs. So they aren't comp

The European Space Agency together with the National Nuclear Laboratory are looking for a potential use of americium-241 in developing RTGs. So they aren't completely nuke-averse. http://www.nnl.co.uk/news-media-centre/news-archive/space-batteries-success/ http://www.nnl.co.uk/news-media-centre/news-archive/space-ba... http://www.quora.com/How-does-ESA-plan-to-power-its-future-space-missions-if-they-dont-want-to-use-RTGs http://www.quora.com/How-does-ESA-plan-to-power-its-future-s... Also, wasn't NASA's Advanced Stirling Radioisotope Generator canned in 2013 due to budget cuts? And recently there were problems with procuring plutonium-238. RTG isn't a silver bullet. http://www.economist.com/news/science-and-technology/21647585-america-resumes-production-plutonium-238-keep-space-within-reach-nasas-dark http://www.economist.com/news/science-and-technology/2164758...