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I have but i still cant get my head around why it is blue.
What are these strange shapes on Mars? Defrosting sand dunes. As spring now dawns on the Northern Hemisphere of Mars, dunes of sand near the pole, as pictured above, are beginning to thaw. The carbon dioxide and water ice actually sublime in the thin atmosphere directly to gas. Thinner regions of ice typically defrost first revealing sand whose darkness soaks in sunlight and accelerates the thaw. The process might even involve sandy jets exploding through the thinning ice. By summer, spots will expand to encompass the entire dunes. The Martian North Pole is ringed by many similar fields of barchan sand dunes, whose strange, smooth arcs are shaped by persistent Martian winds.
As deaf alien stated, it's a false color image.
If that was water, it wouldn't show up as blue anyway. Water is clear, and tends to be the color of the ground it runs over, as well as whatever minerals it dissolves.
So why are the using false colour imaging??? you can tell alot from the colour of things.
Originally posted by XeonSky
I still stand and my conclusion of "Dirty Sand". How it became this colour i do not know.
Originally posted by theflashor
Sorry if this has been posted before, but i have just been studying some pictures of mars
check this one out photojournal.jpl.nasa.gov...
Now forgive me if im wrong but zoom into the bottom of that hill on the top right side of the page. Is that water?
Originally posted by yeti101
half the rocks in that image are blue does that mean theyre made of water?
the reason they use those colour filters is becuase it brings out more detail in the terrain.