In Mars the sunset is Blue
SCIENCE
Contemplate this image for a few seconds, realize all the engineering effort, all the technological and scientific progress, the vast amount of human resources that were invested in achieving this photo. We are watching the sunset on ANOTHER PLANET that at its closest point to us is more or less 70 million kilometers away from Earth (here you can see the current Mars-Earth distance). Think about it. Visualize Mars in your mind…that little red dot in the sky, think about what it would be like to approach it little by little until you reach something as immense as a planet — even if it is almost half the size of the Earth —, that makes me shiver. Because it’s incredible.
On this rust-colored planet, the Sun’s glow at sunset is pale light blue while the rest of the sky looks subtle yellow/reddish rust color, practically the opposite of what we see on our planet. And it is because the color of the sky and the sunset/sunrise depends on the composition of the atmosphere.
But first we must remember that visible light is composed of light of all colors that combined give white light (cover of The Dark Side of The Moon in mind).
