Researchradio occultationplanetary sciencejunointerior modeling
Weizmann Team Redraws Jupiter's Global Shape
8.3
An international Weizmann Institute-led team used 26 radio-occultation passes by NASA's Juno spacecraft to redraw Jupiter's size and shape, publishing results in Nature Astronomy on Feb. 4, 2026. The analysis finds Jupiter's equatorial diameter about 8 kilometers smaller and the polar diameter about 24 kilometers smaller than earlier Voyager/Pioneer estimates, improving fit to gravity and atmospheric models and refining gas-giant formation studies.
Key Points
- 1Used 26 Juno radio-occultations to replace six Voyager/Pioneer measurements and refine Jupiter's global figure
- 2Shows Jupiter is slightly smaller and more flattened; equator 8 km smaller, poles 24 km smaller than prior estimates
- 3Enables improved interior and gravity-field models, aiding planetary formation and exoplanet comparative studies
Scoring Rationale
Strong peer-reviewed Juno dataset and methodological advance raise impact; limited direct relevance to core AI/ML practitioners.
Sources
Public references used for this report.
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