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Astronomers see “warm” glow of Uranus’s rings
https://le.ac.uk/news/2019/june/21-uranus-rings-alma-vlt
The rings of Uranus are invisible to all but the largest telescopes — they weren’t even discovered until 1977 — and they stand out as surprisingly bright in new heat images of the planet taken by two large telescopes in the high deserts of Chile.