Curiosity snapped its first image of Mars, a wide-angle shot of rocky ground, just minutes after landing. Scientists expressed surprise that the scene showed "rather uniform grain size of the coarser particles." And so the journey began. Curiosity has since been using its 17 onboard cameras to take images of the Red Planet. In September 2012, the rover's mast camera captured evidence of a stream that once ran across the north rim of Gale Crater and the base of Mount Sharp, located inside the crater (pictured). It was the first such evidence of water on Mars, NASA said. The rover also has been taking high-resolution color portraits of itself using the Mars Hand Lens Imager (MAHLI), in addition to panoramas of the planet's surface.