Over the weekend, four robot vehicles set out to cross the Pacific, on the longest journey ever attempted by an unmanned ocean vehicle.
The recent crash of an ISS-bound space freighter has prompted Russia to consider the possibility of ending its permanent human presence in space.
Iranian scientists are claiming to have built a functioning flying saucer, state news service Farsnews reports.
Unmanned American drones are helping British soldiers deployed in Afghanistan to step up their fight against the Taliban.
The UK Ministry of Defence (MoD) has uncloaked an advanced unmanned combat aircraft prototype.
Kaman Aerospace and Lockheed Martin have transformed a K-MAX helicopter into an unmanned "aerial truck" capable of autonomously resupplying US troops at forward operating bases (FOBs) in Afghanistan.