• 1 min read Webb Maps Uranus’ Upper Atmosphere Monika Luabeya NASA Webb Telescope Team NASA’s James Webb Space Telescope provided the first vertical view of Uranus’s ionosphere in this image released on Feb. • 19, 2026, revealing auroras shaped by its tilted magnetic field. • Getting a look at the structure of the region where the atmosphere interacts strongly with the planet’s magnetic field is giving us the most detailed portrait yet of where its auroras form, how the magnetic field influences them, and also data on how Uranus’s atmosphere has continued to cool since the 1990s. • Uranus has the strangest magnetosphere in the Solar System. • It is tilted and offset from the planet’s rotation axis (and this planet already rolls around the Sun nearly on its side), which means auroras move across the surface in complex ways. • Better understanding Uranus will give us insight into ice-giant planets and help us better characterize giant planets outside our Solar System.

Article Summaries:

  • NASA’s James Webb Space Telescope released the first vertical image of Uranus’s ionosphere on Feb. 19, 2026, showing auroras shaped by the planet’s highly tilted and offset magnetic field. The view provides the most detailed portrait yet of where auroras form, how the magnetic field influences them, and offers new data indicating that Uranus’s atmosphere has continued to cool since the 1990s. Uranus’s unusual magnetosphere-tilted relative to its rotation axis and offset from the planet-causes auroras to drift across the surface in complex patterns. These findings enhance understanding of ice‑giant planets and aid characterization of similar exoplanets.
  • NASA’s James Webb Space Telescope provided the first vertical view of Uranus’s ionosphere in this image released on Feb. 19, 2026, revealing auroras shaped by its tilted magnetic field. Getting a look at the structure of the region where the atmosphere interacts strongly with the planet’s magnetic field is giving us the most detailed portrait yet of where its auroras form, how the magnetic field influences them, and also data on how Uranus’s atmosphere has continued to cool since the 1990s. Uranus has the strangest magnetosphere in the Solar System. It is tilted and offset from the planet’s ro

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