Roadmap to Other Earths Abstract: NASA's long-term program of space-based missions to detect and characterized exoplanets is the Navigator Program. It comprises a suite of interrelated missions to discover and characterize planetary systems and Earth-like planets around nearby stars. The missions are designed to build on each other's success, each providing an essential step forward toward the goal of discovering habitable planets and life. The missions in the Navigator Program and their relation to each other are described in this talk. Moreover, the Program is described in the wider context of international efforts in the broadening field of exoplanet research. Science priorities and research opportunities related to the Navigator Program are also described.