Before revision: Cutaway diagram of the advanced Stirling radioisotope generator The advanced Stirling radioisotope generator (ASRG) was a radioisotope power system first developed at NASA's Glenn Research Center.
After revision: Cutaway diagram of the advanced Stirling radioisotope generator The advanced Stirling radioisotope generator (ASRG) is a radioisotope power system first developed at NASA's Glenn Research Center.