#Swarm

All articles tagged with "Swarm"

Earth’s magnetic field is thought to be generated largely by an ocean of superheated, swirling liquid iron that makes up Earth’s outer core. That activity generates electric currents and thus the continuously changing electromagnetic field. Courtesy SA/AOES Medialab

ESA’s Swarm Satellites Spot a Surprising Reversal Deep in Earth’s Outer Core

Data from ESA’s Swarm mission show that molten material in Earth’s outer core beneath the Pacific changed direction around 2010 and is now moving eastward at increasing speed.

Key Takeaways

Swarm data show a large-scale flow reversal in Earth’s outer core beneath the Pacific.
The motion changed from westward to eastward around 2010 and is accelerating.

DT Editorial Team·May 29, 2026·via universetoday.com