Time Travel Simulator

Time Travel Simulator — real-physics demo

Initializing…

Note: This simulator models forward time dilation (special & gravitational relativity). Backwards time travel is not modeled — physical theories do not support macroscopic backward time travel. Equations used: γ = 1/√(1−v²/c²), φ_g = √(1−2GM/rc²).

Controls

Ship velocity (fraction of c): 0.10 c

Central mass (solar masses): 1.0 M☉

Distance from mass (km): 1,500,000 km

Simulation speed multiplier (visual): 1×

Local date/time (ship):

Target external date/time (Earth frame) to compare to:

This demo computes two main effects:

1. Special relativity — time dilation when moving fast: γ = 1 / √(1−v²/c²).
2. Gravitational time dilation — approximation from Schwarzschild metric: √(1−2GM/(rc²)).

The net proper-time rate is the product of both factors (approximation for non-rotating spherical mass and moderate velocities).