Saturn has always been prominent in the night sky. Its rings catch the eye, but the real action takes place in the dense layers of gas that surround the planet.
Now, two powerful space telescopes have captured new images that show Saturn in ways we’ve never seen before.
These views don’t just look different – they reveal how the planet really works. A single image shows the colors and details that we can see with our eyes.
The other goes deeper, bringing out the hidden elements and movements in the atmosphere. Put them together, and Saturn begins to feel less like a distant system than a moving system.
Two telescopes, one story
The images come from two well-known telescopes: the James Webb Space Telescope and the Hubble Space Telescope. They observed Saturn for just a few weeks in 2024, each using a different type of light.
Hubble focused on visible light, showing the planet’s subtle bands and subtle color changes. Webb looks in infrared, which can cut through fog and reveal structures at different depths.
Scientists describe this composite view as a way of “slicing” Saturn’s atmosphere, layer by layer.
What moves in Saturn
New images highlight how Saturn’s atmosphere works. According to Webb’s view, a long, winding feature called a “ribbon wave” is spreading across the planet’s northern hemisphere. It moves and bends, created by waves that are not easy to detect in visible light.
Below that lies a small area connected to a previous event known as the “Great Spring Storm” from 2010 to 2012.
Even years later, traces of that storm are still visible. Several other hurricanes form in the southern part of the planet, each formed by strong winds deep below the clouds.
These examples are not random. Saturn acts as a natural laboratory where scientists can study how fluids move under extreme pressure and speed.
The behavior of these clouds helps to explain the climate not only on other planets, but also on Earth in a broader sense.
A strange hexagon on a stick
Near Saturn’s north plate sits one of the most amazing weather systems in the solar system. It is a six-sided jet stream that forms a close-knit hexagon. First seen in 1981, it has had its shape for decades.
Both telescopes caught a faint glimpse of this feature as well. Its long lifetime suggests that some major planetary systems remain stable for very long periods of time. That stability raises new questions about how energy flows in Saturn’s atmosphere.
There is also a sense of time here. Scientists expect this may be the last clear view of the hexagon for years. The northern part is heading for winter, and will be in darkness for about 15 years.
A closer look at the numbers
Webb’s infrared images reveal something unusual in Saturn’s poles. They appear in a blue-green tone, which corresponds to a light of about 4.3 microns.
This color change may occur in the upper part of the atmosphere which scatters light differently.
Another possibility is the auroras. These flashes occur when charged particles collide with the planet’s magnetic field.
Saturn has them, as does Earth. Observations like this have also been linked to similar findings on Jupiter, Uranus, and even Neptune.
Rings that shine in a new light
Saturn’s rings look very different depending on how you look at them. In the infrared, they are very bright because they are mostly made of luminous water ice.
Webb’s graphics make them stand out, especially the thin F ring.
Hubble shows the rings in a simple way, and shadows fall on the planet below. Subtle details, such as faint lines and structures within the thick B circle, appear differently in each image. Together, they provide a complete picture of how the rings were built and how they changed over time.
Saturn through the seasons
Saturn is stationary. Its position, along with the Earth’s rotation around the Sun, changes the way we see it every year.
The 2024 images were taken 14 weeks apart, during the transition from the northern summer to the 2025 equinox.
As the seasons change, different parts of the planet appear. The southern hemisphere will be easier to study in the coming years, especially as it approaches summer in the 2030s.
Building a long-term record
Hubble has been observing Saturn for decades with a program that tracks changes every year. This consistent record shows how storms form, disappear, and sometimes return in new ways.
Webb adds a deep layer to that record. Its ability to see in space helps scientists to measure things that they did not know before. Together, the two telescopes turn the photos into a long-term story about how Saturn is changing.
Saturn may look quiet from afar, but these new images make one thing clear. Beneath that smooth surface, the planet is constantly in motion, driven by forces that are still not fully understood.
Data for this report were provided by NASA, ESA, CSA, STScI, Amy Simon (NASA-GSFC), Michael Wong (UC Berkeley); Image Editing: Joseph DePasquale (STScI)
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