Lagrange Point Stability 3D Explorer vs Lagrange Points 3D Explorer
freetoolonline.com editorial teamBoth pages teach real Sun-Earth Lagrange-point geometry in one page load - 0 MB installed, USD 0, no account. The Lagrange Points 3D Explorer shows WHERE the five Sun-Earth points sit and which real spacecraft fly near them; the Lagrange Point Stability 3D Explorer answers WHY three of them always fail and two hold only below a real mass-ratio threshold.
The numbers side by side
| Aspect | Lagrange Points Explorer | Lagrange Point Stability Explorer |
|---|---|---|
| Install size | 0 MB - runs in the browser | 0 MB - runs in the browser |
| Price | USD 0 | USD 0 |
| Key figures | L1/L2 about 1.5 million km from Earth, L4/L5 at 60 deg, SOHO near L1, JWST near L2 | Routh's critical mass ratio about 0.0385, mass ratios from Sun-Earth (about 3.0e-6) to Pluto-Charon (about 0.1044) |
| Mass ratio changes | fixed at the real Sun-Earth ratio | a log-scaled slider plus four real-system presets |
| Stability shown | not addressed - points are placed, not tested | a genuine RK4 integration of five perturbed test points every frame |
Where the Lagrange Points Explorer wins
The Lagrange Points Explorer wins when the question is simply where the five Sun-Earth points sit and which real missions - SOHO, JWST - use them, with no slider to change.
Where the Lagrange Point Stability Explorer wins
The Lagrange Point Stability Explorer wins when the question is why L1, L2, and L3 always drift away while L4 and L5 hold only under a real threshold - it is the only page on the site with a live mass-ratio slider, four real-system presets, and a genuine numerical integration deciding the outcome.
A reasonable rule
As a reasonable rule, use the Lagrange Points Explorer first to see where the five Sun-Earth points are and which spacecraft sit near them, then use the Lagrange Point Stability Explorer to see why only two of those five points could ever hold something in place - and exactly when even those two let go.
See how to use the Lagrange Point Stability 3D Explorer for a step-by-step walkthrough.
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