George Kristiansen
Astronomy Calculators
FreeGet a collection of small and simple calculator utilities.
WindowsPerilune - 3D Moon Landing Simulator
PaidPerilune is a 3D lunar landing flight simulator game with procedurally generated terrain and realistic physics.
AndroidGeorge Kristiansen Moon lander
FreeFly the final 3km of an Apollo-inspired descent to the lunar surface.
Windows
Orbit-Vis
FreeGet a simple graphical/numerical orbit simulator.
Windows
