Technicians spent two years reducing the weight of the radar system from 100kg to a manageable 4kg for the polar expedition.

Shortly afterwards its radar system detected a large aircraft flying at high altitude.

Then retro rockets that act as braking engines, and a radar system, will guide the rover to a soft landing.

The craft were seen on a new radar system that was being installed in fighter jets at the time.

Operators typically use a radar system mounted alongside the laser to detect airplanes that might stray into the area and automatically shut down the laser.