Swarm tracks Earth’s turbulent magnetic field 

blink-and-you-miss-it indeed!

Tallbloke's Talkshop

Earth's magnetosphere [image credit: SPL / BBC] Earth’s magnetosphere [image credit: SPL / BBC]
The BBC report by Jonathan Amos includes two ‘blink-and-you-miss-it’ videos that offer a global view of the magnetic patterns. The three-year east-west oscillation sounds interesting.

Europe’s Swarm mission is providing an unprecedented view of Earth’s turbulent magnetic field, scientists say. The three-satellite constellation is now routinely mapping its convulsions, allowing researchers to probe the mechanisms that drive the “invisible shield” in remarkable new detail.

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