Thursday, February 5, 2026

Uranus, blasted

More news from 34 Tauri: the 1986 readings came during a flare. I see Uranus in the news, I, uh, click.

King George III's kawkab at 20 AU was highly radioactive when Voyager zipped past the bulleye 1986. The survey planned for the polar reading they got. Off the charts suggests they got what the Russians that year might measure as 3.6 Roentgen/hour. Since then in 2019 we've seen what flares can do to Earth's Van Allens.

I'd just apply inverse-square to get 1/400 the incoming energy. But that is a lot for a region so naturally cold.

The paper is "Solving the mystery of the electron radiation belt at Uranus: Leveraging knowledge of Earth’s radiation belts in a re-examination of Voyager 2 observations", Geophysical Research Letters per the Southwest Research Institute (SwRI) although only with DOI, not link. Keeping in mind that Sci-Hub at .ru doesn't have everything and that Anna's Archive is likely going offline / darkweb.

BACKDATE 2/8

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