First check-in from another planet
NASA made the first foursquare check-in from another planet this week when the Curiosity Rover checked-in using the foursquare mobile app. The Rover checked-in as it makes its way towards Mount Sharp, which stands about 3 miles tall.
NASA has been using foursquare to keep public interested in its space missions alive for a while. Previously, a NASA astronaut made the first foursquare check-in from the international space station. The picture NASA posted with the foursquare check-in from Mars shows the Curiosity Rover and its shadow on the surface of the red planet.