Mars Plane

NASA engineers have been working for years on a concept for a rocket-delivered unmanned plane to fly through the skies of Mars. Now, with support from the Pentagon's Defense Advanced Research Projects Agency (DARPA), the Mars plane is one step closer to reality. DARPA plans to develop the idea for use in terrestrial disasters--launching a rocket to deliver the plane quickly to dangerous areas. After that, there's no reason NASA couldn't ship the plane to Mars, as was originally intended. DARPA is also working on an autonomous fueling system that could keep the plane flying above the Martian surface for up to five years straight. Plus, it looks really cool. More details here.