Contents Ch. 1: Recent History of Breakthrough Propulsion Studies Ch. 2: Limits of Interstellar Flight Technology Ch. 3: Prerequisites for Space Drive Science Ch. 4: Review of Gravity Control Within Newtonian and General Relativistic Physics Ch. 5: Gravitational Experiments with Superconductors: History and Lessons Ch. 6: Nonviable Mechanical “Antigravity” Devices Ch. 7: Null Findings of Yamashita Electrogravitational Patent Ch. 8: ChForce Characterization of Asymmetrical Capacitor Thrusters in Air Ch. 9: Experimental Findings of Asymmetrical Capacitor Thruster for Various Gasses and Pressures Ch. 10: Propulsive Implications of Photon Momentum in Media Ch. 11: Experimental Results of the Woodward Effect on a Micro-Newton Thrust Balance Ch. 12: Thrusting Against the Quantum Vacuum Ch. 13: Inertial Mass from Stochastic Electrodynamics Ch. 14: Relativistic Limits of Spaceflight Ch. 15: Faster-than-Light Approaches in General Relativity Ch. 16: Faster-than-Light Implications of Quantum Entanglement and Nonlocality Ch. 17: Comparative Space Power Baselines Ch. 18: On Extracting Energy from the Quantum Vacuum Ch. 19: Investigating Sonoluminescence as a Means of Energy Harvesting Ch. 20: Null Tests of “Free-Energy” Claims Ch. 21: General Relativity Computational Tools and Conventions for Propulsion Ch. 22: Prioritizing Pioneering Research