Space Fence

​An overhaul of the system that tracks space junk orbiting the Earth has taken another stride forward, with Lockheed Martin opening a new test site for its Space Fence system.

Ground was broken at the future six-acre (2.4-hectare) site of the new Space Fence radar system in a special ceremony last month on Kwajalein Atoll in the Marshall Islands, marking the official start of construction of the system that will track objects in orbit.