... Credit: Mars Exploration Rover Mission , Texas A , Cornell , JPL , NASA Explanation: What would it be like to see a sunset on Mars? ... Now on Earth a red sunset is caused by two effects -- by blue light being preferentially scattered out of sunlight by oxygen and nitrogen molecules in the atmosphere, and by scattering off a small amount of impurities like volcanic dust . ... Publications with keywords: Mars - sunset . Publications with words: Mars - sunset . ... Victoria Crater on Mars . ...