What Is the Zwan-Wolf Effect at Mars?
Researchers found the effect in Mars’ ionosphere below 200 kilometers, showing solar storms can reshape the planet’s induced magnetic shield.
- NASA's MAVEN spacecraft detected the Zwan-Wolf effect in the Martian ionosphere during a December 2023 solar storm, marking the first time this phenomenon has been observed in a planetary atmosphere.
- Originally discovered 50 years ago, the Zwan-Wolf effect squeezes charged particles along magnetic field lines like toothpaste through a tube, a process previously thought limited to planetary magnetospheres like Earth's.
- Christopher Fowler, a research assistant professor at West Virginia University, published findings in Nature Communications showing the effect reduced local ionospheric particle density by around 50%.
- These observations suggest even unmagnetized bodies like Mars can experience complex magnetic phenomena, providing new insights for studying atmospheric dynamics on Venus and Saturn's moon Titan.
- While MAVEN has remained silent since December 6, 2025, researchers continue analyzing collected datasets, and NASA established an anomaly review board in February 2026 to assess the spacecraft's status.
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MAVEN Discovers Space Weather Atmospheric Effect At Mars - Astrobiology
In December 2023, scientists looking at Mars data stumbled across something completely unexpected — observations of an atmospheric effect never before seen in the Red Planet’s atmosphere. Using instruments aboard NASA’s MAVEN (Mars Atmosphere and Volatile Evolution) mission, scientists identified a phenomenon known to occur in Earth’s magnetosphere, where charged particles are squeezed like toothpaste […] The post MAVEN Discovers Space Weather A…
MAVEN Detects Rare Atmospheric Effect on Mars
New observations from NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft reveal that the Zwan-Wolf effect -- a phenomenon once thought unique to Earth’s magnetosphere, in which charged particles are squeezed like toothpaste coming out of a tube along magnetic structures called flux tubes -- is also reshaping the Red Planet’s upper atmosphere. The post MAVEN Detects Rare Atmospheric Effect on Mars appeared first on Sci.News: Breakin…
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