Mounted to the Mars Reconnaissance Orbiter as it floats high above the red planet is the HiRISE telescope, an imaging device capable of taking incredibly high-resolution photos of the martian landscape.
The stunning views captured by HiRISE have inspired a book from the publisher Aperture, called This is Mars, which includes 150 of its finest looks at the planet. The entire collection is in black and white, however, as that's how HiRISE's images naturally turn out. But by combining different color filters on the telescope, NASA is able to produce colored versions of most images too.
(thanks Miss Rare)