The Defense Advanced Research Projects Agency (DARPA) of the US surprised everyone by announcing the USX-1 Defiant, the world's first unmanned ship.

DARPA just revealed an animation showing the conceptual design and functionality of its unmanned VTOL X-Plane, nicknamed "Lightningstrike." VTOL stands for "vertical takeoff and landing." ...

April 5 (UPI) --NASA researchers are planning to study changes in the sun's radiation during the solar eclipse via an unmanned aircraft on Monday. The team of six researchers from NASA's Langley ...