Week of 10 December 2018 

The Enduring Charm of Martian Spiders
The Enduring Charm of Martian Spiders
Our current theory for how these patterns are formed is that during winter a carbon dioxide ice layer develops over the surface.  
Swiss Cheese on a Red Planet
Swiss Cheese on a Red Planet
HiRISE has looked at this part of the polar cap many times to see how it is changing.   
Slope Streaking
Slope Streaking
We’ve monitored slope streaks on this hill for several years, and can see definite changes over time.  
The Eastern Slope of Asimov Crater’s Central Pit
The Eastern Slope of Asimov Crater’s Central Pit
Asimov is an 84-kilometer diameter crater located in the southern ancient highlands of Mars.   
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