NASA's exploration of Mars has resulted in a multitude of imagery and data, too much for the institution itself to sort in a timely manner, and so they have created the Be A Martian website, an online activity for those curious about exploration of the red planet, where users can participate in help to sort through the collected imagery as well as learn more about the exploration being done. There are two mapping tasks you can take on, both presented in the style of a game where you can earn reputation points. The first involves aligning images, using directional arrows to overlay one set of photos to match against a larger background image. The second involves counting craters, a key to measuring the age of small areas,where you simply identify craters within provided photos. Both activities can earn you points and badges. In addition to the helpful games there's also a town hall where you can ask and vote on questions for NASA experts, a large archive of movies and educational videos, and a Google Earth-styled zoomable view of the planet itself.