A free, browser-based 3D map of the solar system set in the 2350s of The Expanse. Planets, moons and asteroids sit where NASA JPL ephemerides put them; canon stations such as Tycho and Anderson orbit alongside. Pick an origin and destination (Earth to Ceres, Mars to Ganymede), choose a sustained burn from 0.3 g to 5 g, and get an Epstein-drive flip-and-burn flight plan: travel time, flip point, peak velocity and light lag, with honest physics and canon-feel times side by side.
Unofficial fan project, not affiliated with James S. A. Corey, Orbit Books, Alcon Entertainment or Amazon Studios.