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Uranus' Radiation Belt: New Insights from Voyager 2 Data

2/11/2026

Summary

Story summary

A new analysis suggests a temporary space weather event intensified Uranus' electron radiation belt during the 1986 Voyager 2 flyby, likely via a co-rotating interaction region.
Researchers found similarities between Voyager 2 data and a 2019 space weather event on Earth, supporting the proposed mechanism.
The finding raises questions about Uranus' radiation belt stability and its interaction with solar wind, and prompts a dedicated mission to study Uranus.

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Story summary

A new analysis suggests a temporary space weather event intensified Uranus' electron radiation belt during the 1986 Voyager 2 flyby, likely via a co-rotating interaction region.
Researchers found similarities between Voyager 2 data and a 2019 space weather event on Earth, supporting the proposed mechanism.
The finding raises questions about Uranus' radiation belt stability and its interaction with solar wind, and prompts a dedicated mission to study Uranus.