From NewScientist:
"No, your monitor colour settings aren't wrong. This is picture of the red planet of Mars, snapped by NASA's Mars Reconaissance Orbiter.
The image shows blue sand dunes covering part of the Rabe Crater, a 100 kilometre diameter impact site in the planet's southern highlands. The dunes are an accumulation of basalt sands from the crater's floor, shaped by Martian winds. This close view reveals the thumbprint-like texture of the ridges, troughs and ripples formed there."
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