The surface is colored by the atmosphere by iron oxides. Under a very thin layer, only millimeters in the depths of places, they are no longer red.
When we look at our planet Earth from space, we see that even our home world itself comes in countless different colors. The sky itself is blue, where the atmosphere is brokenly blue, with all directions, giving the atmosphere a distinctive color. The oceans themselves are blue, as water molecules are better in absorbing red light, long wavelength than blue light. Meanwhile, the continents appear brown or green, dependent on the vegetation (or its absence) there, while Icecaps, iceotens and clouds always look white.
However, the diversity of colors is not common in all planets. For example, in our adjacent world, Mars, one color dominates: red. Earth is red: red everywhere. Low lands red. Red highlands. Dried red river dryers. Red sand dunes. Everything is red. The atmosphere itself is also red in every location we can measure. It seems that the only exception to “Red” is iCECAPS and Mars clouds, which are white, albeit colored with a red color as observed from the ground. However, it is surprising that the “redness” of Mars is …
