text: The coolest selfie of all time! On 31 October 2012 NASA's Curiosity rover used the Mars Hand Lens Imager (MAHLI) to capture this set of 55 high-resolution images, which were stitched together to create this full-colour self-portrait. The arm is not visible because it was out of shot in the images used to make up this mosaic (Image: NASA/JPL-Caltech/Malin Space Science Systems via Wikimedia Commons