Swarm reveals magnetic waves across Earth’s outer core

Using information from ESA’s Swarm satellite mission, scientists have discovered a completely new type of magnetic wave that sweeps across the outermost part of Earth’s outer core every seven years. This fascinating finding opens a new window into a world we can never see. This mysterious wave oscillates every seven years and propagates westward at up to 1500 kilometres a year. Read full story: ★ Subscribe: and click twice on the bell button to receive our notifications.