It's usual for CCD sensors in space to have such artifacts, due to energetic particles. It's true for a camera on Mars too, as the atmosphere is way too thin to

It's usual for CCD sensors in space to have such artifacts, due to energetic particles. It's true for a camera on Mars too, as the atmosphere is way too thin to protect from solar particles. http://www.eso.org/~ohainaut/ccd/CCD_artifacts.html http://www.eso.org/~ohainaut/ccd/CCD_artifacts.html