Our planet's liquid iron outer core is slowly giving up its secrets to a trio of satellites launched by ESA in 2013. Called Swarm, the three probes have been studying Earth's magnetic field at the source. In the process, they've revealed startling changes in a molten layer region 2,200 kilometers be...
An Orbiting Satellite Triad Reveals Motions Inside Earth
By system
May 28, 2026 •
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Universe Today