Preface -- Acknowledgments -- Contents -- Tables, Figures, and Box -- Summary -- 1 The Problem -- 2 Background -- 3 Plutonium-238 Supply -- 4 RPS Research and Development -- List of Findings and Recommendations -- Appendixes -- Appendix A: Statement of Task -- Appendix B: Biographies of Committee Members and Staff -- Appendix C: NASA's Projected Demand for 238Pu -- Appendix D: Comparison of 238Pu to Alternatives -- Appendix E: History of Space Nuclear Power Systems -- Appendix F: Briefings to the Committee -- Appendix G: Acronyms and Abbreviations.