GR gravity simulator

Click & drag on empty space to place and size a mass (10% of width = 1 Earth mass). Drag from a mass to set its velocity (10% = 30 km/s). Click a mass to follow it (double-click to return to centre of mass). Right-drag or Shift-drag to orbit, wheel to zoom (free zoom; press F or "Fit all" to return to auto-fit).

Mass unit G multiplier × real G (6.674e-11 N·m²/kg²) Distance unit Time factor 1000× Vapour trails fade Starfield GR correction GW radiation Reverse time Music