What color are sunsets on Mars?
Mars is the red planet and is usually depicted in various hues of that color in movies.
But photos taken by NASA’s Curiosity rover show the sun setting in a blue-tinged sky. This was the first full-color photo received from the rover. The cause of the blue sunset lies in the dust particles in the Mars atmosphere. The very fine dust is of a size that allows blue light to penetrate the atmosphere more efficiently. Source: CBSnews.com