The science of star navigation is as old as time. From the spice trade routes of Dune to the colonization of Red Mars, the ability to navigate the stars has been vital for human survival. But ethical considerations must be made when building railroads on alien worlds, as explored in Enders Game. The economic potential of starbased railroads is vast, as seen in A Fire Upon the Deep. However, the technical challenges of navigating through black holes and interstellar gas clouds must be understood to make this a reality.