How does the Jeans Escape Calculator work?

Input planet mass/radius, atmospheric temperature and composition Then: Calculate escape velocity and thermal velocity Then: Estimate atmospheric escape timescale.

Can you give an example of how to use the Jeans Escape Calculator?

Example: Input Earth H/He at 6000K exosphere gives a result of H escapes easily, He slowly, O/N retain (Why Earth lost primordial atmosphere).

Is the Jeans Escape Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Jeans Escape Calculator?

Our Jeans Escape Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Jeans Escape Calculator

Temperature (K)

Molar Mass (g/mol)

Escape Velocity (km/s)

Jeans escape describes atmospheric loss when molecular thermal velocity exceeds planet escape velocity, particularly important for light elements.

Difficulty:advanced

References

›Jeans Escape — Wikipedia

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Jeans Escape Calculator

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Jeans Escape Calculator