The core of this project is the NKTg Law of Variable Inertia, a physics-based model that describes how position, velocity, and mass determine an object's motion tendency in space.

We define:

NKTg₁ = x × p, where p = m × v
→ Rearranged, the formula becomes: m = NKTg₁ / (x × v)

This means that if we know a planet’s position (x), velocity (v), and its NKTg₁ (the interaction value), we can directly calculate its mass — no empirical fitting required.

This project puts this formula to the test using real-time NASA data.