Our tiny robot friend way out there on planet Mars introduced lots of new people to Twitter and sent us back some amazing discoveries. Along the way, he also transformed the way NASA shares science with the world. MarsPhoenix was an amazing use of Twitter that did not go unrecognized and we’re happy to have had the chance to share in this historic mission. Alas, when the icy cloak of Martian winter draws darkness across the distant planet, a solar powered robot must say farewell. Sweet dreams little guy!