Up in the sky, is that a drone, a plane or a helicopter? Experts who study unmanned aircraft systems — better known as drones — say it can be tough to tell from miles away. But there are clues.
Newsweek spoke to drone specialist Vijay Kumar, a professor of mechanical engineering at the University of Pennsylvania, about how an ordinary person could spot the difference between a plane and ...
National security officials have repeatedly stressed that many of the reported drone sightings are "actually manned aircraft, operating lawfully." This points to commercial, military, or general ...
Up in the sky, is that a drone, a plane or a helicopter? Experts who study unmanned aircraft systems — better known as drones — say it can be tough to tell from miles away. But there are clues.