ALT A selfie taken by the Curiosity rover on Mars shows the six-wheeled robot positioned slightly right of center against the Martian landscape. The rover faces the bottom-left corner, its "head" rising just above the horizon in the distance. Its metal surfaces are lightly covered with red-orange Martian dust, with its silver and black surfaces below peeking through. The ground around the rover is mostly flat and covered in red-brown dirt and small- to medium-sized pebbles. The sky is a lighter shade of reddish-brown, with no clouds or features visible.