Drones look to the stars to make themselves stealthier

A circle of light seen in the night sky among bright stars.

A new celestial navigation system designed for drones could make them harder to detect by eliminating the need for GPS signal emissions.

Scientists from the University of South Australia have developed a new navigation system that allows uncrewed aerial vehicles (UAVs) — or drones, as they're more commonly known — to sense their location based on the stars in the night sky.