How amazing is this? It is something that you have to see to believe.

Aurora Flight Sciences is working on the "Vulture" program with project partners BAE Systems, CS Draper Laboratory and the Sierra Nevada Corporation. The Project is being funded by a Defense Advanced Research Projects Agency contract(DARPA).

The goal of the "Vulture" program is to develop an unmanned aircraft that can stay aloft for five years. Made possible by the power of the sun.