NASA’s James Webb Space Telescope Maps Uranus’ Upper Atmosphere, Revealing Complex Ionospheres, Magnetic Effects, and Cooling Trends Since the 1990s

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The telescope imagery shows Uranus as a smooth cyan-blue disk surrounded by faint rings. Several thin concentric ring structures appear as pale gray arcs against the darkness of space. Slight brightness differences across the planetary surface suggest variations in atmospheric density and structure, especially near the limb regions where the atmosphere meets space.

Another important scientific result concerns temperature evolution in Uranus’ atmosphere. Analysis of historical data compared with modern measurements indicates that parts of the upper atmospheric layer have continued cooling since observations were first recorded in the 1990s. Scientists are using this information to better understand energy transport processes inside distant planetary atmospheres.

The project involved international collaboration, including contributions from the European Space Agency and the Canadian Space Agency. The imaging work was reviewed by members of the Webb telescope science team, including contributor Monika Luabeya, who helped process and interpret observational data.

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