The sunsets are always a breathtaking spectacle, often in a mixture of colors between red and orange. But, did you know that on Mars the sunsets are of a completely different color? Indeed, they are… blue! Explanations.
Seeing blue sunsets may seem strange to you, but on Mars it’s a fairly common sight. Indeed, the Sun radiates a bluish color then gradually discolors before having a pinkish hue and then setting. But why are the sunsets blue on Mars?
According Ezra Block and Robert Krulwich, this phenomenon stems from the size of the dust in suspension as well as the wavelengths of light that these dust particles let through. Dust is indeed smaller on Mars and more numerous than on Earth. They therefore manage to be of sufficient size to absorb the blue-colored wavelengths while scattering the red-colored ones across the sky. The rays of light having lost their red spectrum, the light thus has a blue appearance.
On Earth, dust particles are on the contrary larger. They therefore discard the blue wavelengths and give way to those that are red. The opposite effect is therefore observed. Isn’t the show breathtaking?
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