Sure, we long ago realized that you can't say Foursquare without the word "square," but in this case it only took an appearance of the International Space Station to arouse our interest. Indeed, when we heard that the current ISS commander (and enthusiastic Twitter user) Douglas Wheelock beat us to unlocking the NASA Explorer Badge, we realized that it's true: astronauts have all the fun. And the best part? The badge entitles him to a free "scoop" of space ice cream! But fear not, fans of location-based social networking games, 'cos this is only the beginning: NASA is teaming up with the company to create additional locations around the country.