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TOPIC: Mars atmosphere and erosion.


Teaching the truth

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Mars atmosphere and erosion.
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That means to fly a kite on Mars, the wind would need to blow much faster than on Earth to get the kite in the air. Which also means it would need to blow much faster to get grains of sand and dust lifted from the surface. I have said before that there is very little evidence of wind-blown stuff lying around, either in the form of sand piled up behind rocks or in the form of surface erosion of rocks. In the millions of years these rocks have been there, even with a small weak wind, the rocks exposed would have been smoothed by now, but we continue to see images of sharp angular jagged rocks. How come?

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Teaching the truth

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Focusing on wind speed may be a little misleading, as well. The atmosphere on Mars is about 1 percent as dense as Earth’s atmosphere. That means to fly a kite on Mars, the wind would need to blow much faster than on Earth to get the kite in the air.

 

“The key difference between Earth and Mars is that Mars’ atmospheric pressure is a lot less,” said William Farrell, a plasma physicist who studies atmospheric breakdown in Mars dust storms at Goddard. “So things get blown, but it’s not with the same intensity.”

 

onwards 

https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of-martian-dust-storms



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Just a simple question. Being that the claimed atmosphere is .8 of 1 percent of Earth and there are no large molecules like H2O in it, How does it have the volume or acceleration to pick up even the smallest of dust particles to cause "dust devils" or any erosion at all? And how could the lightest of particles cause the type of erosion we see in what is supposed to be "rock". 



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