By Midnight Martian
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Midnight Planets is Midnight Martian's ongoing project for visualizing other worlds. Currently the app lets you explore Mars as seen by the Mars Rovers Curiosity, Spirit and Opportunity. It lets you view almost every image returned by the rovers in context, and provides a number of options for viewing in 3D.
What's New in Version 1.2.6
Another fix for asynchronous loading.
I love this application. My mind is blown that I can look at pictures taken only the day before on another planet. The 3D options are especially cool. Keep up the GREAT work.