One of Mars' polar ice caps. NASA/JPL-Caltech/MSSS Mars definitely deserves its "Red Planet" nickname, since it's basically covered in reddish-brown rust.

But scientists use such a range of photographing techniques that the planet can end up a rainbow of colors.

NASA's Mars Reconnaissance Orbiter started circling the planet in 2006, and since then its camera has been busy capturing gorgeous — and scientifically valuable — images of Mars.

That camera, called HiRISE, takes images so detailed scientists can examine the planet's features at the scale of just a few feet.

We combed through the camera's latest update to find some of the most beautiful pictures. Scientists haven't had a chance to dig their teeth into them yet — but when they do, who knows what incredible discoveries they'll make.