This document discusses the geoethics of interstellar space missions and proposes establishing a Society for the Advancement of Geothical Activities in Nature (SAGAN) to accelerate space infrastructure development. It defines a baseline geoethical interstellar mission that would launch within 100 years, enable spacesteading, and travel between star systems within an adult lifetime using constant low acceleration. The document argues that technology can be developed more ethically and freely in space than on Earth due to fewer regulations and pollution concerns.