Astronomers using the giant Keck One telescope atop a volcano in Hawaii have discovered a thermal hot spot on Saturn.
Infrared images show a warm polar vortex swirling at Saturn's south pole, and scientists say the hot spot has the highest temperatures on the planet.
A polar vortex is a large-scale weather pattern, similar to a jet stream in Earth's upper atmosphere.
Polar vortices found on Earth, Mars, Venus and Jupiter are significantly colder than their surroundings. Saturn's hot spot is the first warm polar vortex ever seen in our solar system.
Some information for this report provided by AP.