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With the addition of Saturn, the James Webb Space Telescope has finally imaged all four giant worlds in the Solar System. This telescope’s observations of the sixth planet in our cosmic neighborhood, recorded on June 25, 2023, have been refined and processed to reveal a spectacular view of Saturn’s magnificent rings glowing in the darkness of space.
On the other hand, the disk of Saturn in James Webb’s new image is completely dark and lacks the signature cloud layers. The planet looks pale brown and without any special features from the view of this telescope. This is because James Webb sees the universe at near and mid-infrared wavelengths. These wavelengths of light are usually invisible to the naked human eye; But they can reveal a lot.
For example, thermal emission, which is associated with heat, is dominated by infrared wavelengths. When you want to understand what is going on inside a planet surrounded by thick, cloudy clouds, studying its temperature is a valuable way to understand the planet.
Some elements and chemical processes also emit infrared light; As a result, seeing the planets of our solar system at wavelengths outside the narrow range perceptible to our eyes can teach us more about the nature of those worlds.
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