**10. Conclusion**

When high-energy photons strike a nucleus, pairs of electrons and positrons are created. Those pairs can be separated and stored, or simply separated and re-directed, to a thruster where they can collide, annihilate, and generate 511-keV gamma rays. Those gamma rays can then strike the interior shell of the thruster and generate thrust via the Compton Effect. Depending upon the number of electron/ positron pairs that can be generated in an optimized system, it is highly likely that relativistic speeds can be achieved by matter/anti-matter propulsion. The logical next step for developing this technology is a well-designed set of validation experiments. If matter/anti-matter propulsion is validated, probes to the nearest stars can be developed and launched, and their signals received, within a single human lifetime. The prospect of human interstellar travel using matter/anti-matter propulsion is now realistic and amazing.
