Celebrate #MarsMonday with some of our favorite images of the red planet! These selections were taken by the Curiosity rover and the Mars Reconnaissance Orbiter.

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This is an example of a layered rock face that demonstrates the tremendous variety of terrain on Mars. Taken by the Curiosity rover.

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This image, taken by Curiosity, shows regions that include a long ridge teeming with hematite, an undulating plain rich in clay minerals, and a multitude of rounded buttes, all high in sulfate minerals.

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This image from the Mars Reconnaissance Orbiter features the Curiosity rover on the surface in the blue box.

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This image, taken in 2012 by Curiosity, shows Mount Sharp, which most of Curiosity’s investigations will take place at.

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The Mars Reconnaissance Orbiter shows frost accumulating on a mountain slope, a demonstration of changing seasons on Mars.

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The Mars Reconnaissance Orbiter pictures a region of strange polygonal dunes on Mars.

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A jagged region in Hale Crater is seeping water in this Mars Reconnaissance Orbiter photo.

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An ice crater is shown in stark relief by the Mars Reconnaissance Orbiter.

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The “Kimberly” area on Mars shows evidence of ancient lakes, as seen by the Curiosity rover.