A world crew of researchers has uncovered new insights into the higher ambiance of Uranus, the place ions swirling above the ice big planet’s clouds meet the magnetic area surrounding the world.
“Uranus’s magnetosphere is without doubt one of the strangest within the photo voltaic system,” Paola Tiranti, a researcher at Northumbria College within the U.K., stated in a statement. “It is tilted and offset from the planet’s rotation axis, which implies its auroras sweep throughout the floor in complicated methods.”
“By revealing Uranus’s vertical structure in such detail, Webb is helping us understand the energy balance of the ice giants,” Tiranti said. “This is a crucial step towards characterizing giant planets beyond our solar system.”
The JWST continues to provide unprecedented detail on comic phenomena located millions, even billions, of miles away from us. With such detailed data available, scientists are still able to make new discoveries about the planets in our solar system. The telescope has previously had its sights set on Uranus too, even discovering a new moon of the planet in 2025.
“This is the first time we’ve been able to see Uranus’s upper atmosphere in three dimensions,” said Paola. “With Webb’s sensitivity, we can trace how energy moves upward through the planet’s atmosphere and even see the influence of its lopsided magnetic field.”
Voyager 2 provided our first close-up data and images of Uranus way back in 1986. The flyby helped scientists figure out that Uranus is very cold compared to its neighboring planets — in fact, around then is when we found out Uranus is our solar system’s coldest planet.
“Webb’s data confirm that Uranus’s upper atmosphere is still cooling, extending a trend that began in the early 1990s,” said Paola. “The team measured an average temperature of around 426 kelvins (about 150 degrees Celsius), lower than values recorded by ground-based telescopes or previous spacecraft.”
The research was printed on Feb. 19 within the journal Geophysical Analysis Letters.
