Space.com #More Radioisotope Power – NASA Wants ‘Nuclear Batteries’ To Last Longer | Video 14 October 2016 fborgosano Leave a comment Share: Radioisotope Thermoelectric Generators (RTG) have powered rovers and spacecraft for decades. Now, the space agency is looking to increase the efficiency of the generators for future missions. from Space.com ift.tt/2efN4CK Share: