NASA Mars satellite snaps first public picked photos
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HiRISE is the most powerful camera ever to orbit another planet. It has taken thousands of black-and-white images, and hundreds of color images, since it began science operations in 2006. A single HiRISE image will often be a multigigabyte image that measures 20,000 pixels by 50,000 pixels, which includes a 4,000-by-50,000 pixel region in three colors. It can take a computer up to three hours to process such an image. Despite the thousands of pictures already taken, less than 1% of the Martian surface has been imaged, NASA said.