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Voyager missed it, but now we know Uranus has a fiery secret

For decades, scientists puzzled over why Uranus seemed colder than expected. Now, an international research team led by the University of Houston has solved the mystery: Uranus emits more heat than it gets from the Sun, meaning it still carries internal warmth from its ancient formation. This revelation rewrites what scientists know about the ice giant’s history, strengthens the case for NASA’s upcoming mission, and offers fresh insight into the forces shaping not only other planets, but also Earth’s future climate.

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