Relativistic Interstellar Flight - 3D

Click a star to set the destination

Click a star to fly there - drag to orbit, wheel / pinch to zoom - the expanding wireframe sphere is the light front

Destination

Mission progress (drag to scrub)

Mission presets

Speed vs ship time

Distance vs Earth time (dashed = light)

Ship and drive

Constant proper acceleration (hyperbolic motion), accelerate-coast-flip-brake. Fuel ratio from the relativistic rocket equation, squared for braking. Bow heating assumes 1 hydrogen atom per cm³. Crew dose is a toy estimate: 0.66 Sv/yr cosmic-ray background plus bow loading, reduced exponentially by shield areal density. Star distances from Gaia/SIMBAD, rounded.