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Scientists observe key process behind cosmic magnetic fields for first time
- Scientists observed a small-scale plasma dynamo inside Earth's magnetosheath using NASA’s MMS mission.
- The finding marks the first direct evidence of a natural dynamo in near-Earth space.
- Dynamo action was observed in a region where solar wind interacts with Earth's magnetic field.
- Observation supports theory by showing fields stretch and fold with rapid plasma motions.
- The study uses MMS data to bridge laboratory, simulations, and space plasmas.
- Researchers from Aberystwyth University contributed to the discovery.
- The finding has implications for understanding magnetic fields in planets, stars, and galaxies.
- The study was published in Nature Communications.
- The dynamo action was observed despite the absence of particle collisions.
- This discovery brings researchers closer to modeling magnetic field evolution in the universe.
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