NASA’s amazing Spirit and Opportunity rovers have survived (and generally thrived) on Mars for more than 25 times their expected lifetimes, returning spectacular images and other data that are helping scientists literally rewrite the textbooks about Martian history.  The result is now more than 250,000 photos beamed back from the rovers since 2004. A subset of them, specifically selected for showcasing in glorious full-page color and foldouts in “Postcards from Mars,” were taken with an eye for lighting, framing, color, depth of focus — the same kinds of factors that Earth-bound landscape photographers routinely consider. Hit the jump for a gallery.

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