This is what a penny looks like after being on Mars for 411 days

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There’s an old penny on Curiosity that it uses to calibrate the Mars Hand Lens Imager at the end of its arm. The rover recently took a hi-res close-up of the coin, and as you can see, it’s getting a little dusty. Read more…        

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This is what a penny looks like after being on Mars for 411 days

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