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Mars might not look like much from Earth, but close up, it's a perfect spectacle of natural beauty.
Since 2006, the Mars Reconnaissance Orbiter spacecraft has been orbiting Mars snapping pictures of the surface with its HiRISE camera.
Here is a collection of some of the most incredible images the camera has taken over the years.
The HiRISE images shown here have false coloring that highlights distinct Martian features, like sand dunes shown in the image to the right. The false-coloring helps scientists see how the grooves and troughs of these features change over time.