http://apod.nasa.gov/apod/ap091021.html
Thursday, October 22, 2009
Martian Dust Devils
The markings in the Martian dirt are caused by Dust Devils that lift up the red silt, leaving behind the darker colored material. Amazing!
http://apod.nasa.gov/apod/ap091021.html
http://apod.nasa.gov/apod/ap091021.html
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