Typically, we send rovers to our planetary neighbors one at a time -- but what if we sent a small team of smaller, less impressive robots instead? That's the idea NASA is exploring at Kennedy Space Center with Swarmies: a quartet of four autonomous robots designed to work together to complete a single mission. Working as a colony of insects might, the four machines use a combination of WiFi, GPS and webcams to survey an area, assess its value and contact the other robots if assistance is needed. The robots are less advanced than a typical rover might by, but working in tandem allows them to cover more ground. It also serves as a security measure: if one rover fails, there are three left to complete the mission.