User:Nickyardley18/sandbox
A dust devil that was previously imaged in 2009, there was information found about two years later showing the tracks visible from the previous imaging are completely different from the old ones meaning there had been a dust storm to erase the old tracks.[5]Since it is not always too easy to observe these dust devil tracks on Mars tests have been done on Earth to further our understanding of these storms. Traditionally dust devils leave tracks that are darker, but satellite images have captured some cases where they are lighter than the traditional markings. In conclusion the marks were not darker than usual but the sand had been darkened by five minutes of rainfall during the previous night. Since there is no proof of water on Mars indefinitely it is believed that these lighter marks are being held together by electrostatic forces.[6]
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