Science & TechFact

On Mars, sunsets are blue.

By day the Martian sky is butterscotch, because iron-rich dust scatters the light. At sunset it flips: around the sinking Sun the sky turns blue, whereas on Earth it glows red. The dust grains are larger than air molecules and pass blue light preferentially forward, straight towards you. Twilight also lasts a very long time thanks to the dust.

Useful: Sky colours reveal what floats in the air: molecules scatter differently from dust.

Source: en.wikipedia.org

AstronomieLichtMars

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