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Mars is changing faster than geology usually allows us to see
New Mars Express imagery compared with Viking-era views shows a dark ash deposit spreading across Utopia Planitia over roughly five decades, highlighting active wind-driven change on the Martian surface.
Key Takeaways
- A dark deposit in Utopia Planitia has visibly expanded over about 48 years.
- Wind is the main suspected cause, either by moving ash or exposing it.
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