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When to use Earth-Moon Barycenter 3D Explorer

Last reviewed: 2026-07-21

Use this explorer when you want to see where the Earth-Moon balance point is, and skip it when you want tides or a full gravity sandbox.

The numbers side by side

Aspect	Earth-Moon Barycenter 3D Explorer	Typical alternative
Install size	0 MB - runs in the browser	Desktop gravity sandbox install varies
Price	USD 0	Often paid software
Barycenter offset	About 4671 km from Earth centre (~73% of radius)	Textbook sketch without live wobble

Correcting the idea that the Moon orbits a fixed Earth centre
Showing the barycenter sits inside Earth, 4,671 km from the centre
Linking Earth monthly wobble to how exoplanets are detected

This is an educational visualization; the Moon distance is compressed and the motion is sped up.

Walk the controls in the step-by-step guide, or compare options in vs alternatives. Open the Earth-Moon Barycenter 3D Explorer.

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Last updated: Jul 21, 2026

Reviewed by the Free Tool Online editorial team · Tested in the current versions of Chrome, Firefox, Safari, and Edge before publishing. No account is needed to use any tool. Report a bug - we triage within 72 hours. · Last refreshed April 2026.

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