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magnetic fields & magnetism

Photo of Mars' surface.
Posted inEditors' Highlights

Explaining Mars’ Mysteriously Magnetic Crust

by Sonia Tikoo 13 March 202513 March 2025

Fluid-rock interactions on ancient Mars may have produced abundant magnetic minerals that preserved unusually intense records of the planet’s now-extinct magnetic field.

Illustration of a spacecraft in space.
Posted inEditors' Highlights

Heating Mechanism at Earth’s Bow Shock Depends on Shock Speed

by Marit Oieroset 24 February 202524 February 2025

A new technique shows that the dominance of gradual versus chaotic electron heating processes at Earth’s bow shock is controlled by how fast the shock is moving.

Aerial view of Yellowstone’s Upper Geyser Basin
Posted inNews

Magma Beneath Yellowstone Is Shifting Northeast

by Skyler Ware 31 January 202531 January 2025

Though the volcano’s magma chambers could hold enough material for a caldera-forming event, none of them are likely to erupt soon.

Diagram from the study.
Posted inEditors' Highlights

Wave-Modulated Electron Loss Affects GPS Location Determination

by Mary Hudson 7 January 202520 December 2024

Earth’s magnetosphere controls ionospheric total electron content modulation via plasma wave-induced electron loss impacting GPS spatial location determination.

Diagrams from the study.
Posted inEditors' Highlights

New Empirical Model of the Flux in the Magnetosheath

by Viviane Pierrard 6 January 202520 December 2024

A new study presents a model that reconstructs the plasma flux in the Earth’s magnetosheath.

Composite image of a solar eruption
Posted inNews

Watching a Solar Event from All Angles

by Collin Blinder 2 January 20252 January 2025

A fleet of spacecraft captured unprecedented details of the major solar outbursts in May and June 2024.

The grayscale surface of an asteroid with many boulders
Posted inNews

Magnetic Meteorites May Explain How the Solar System Assembled

by Jenna Ahart 12 December 202412 December 2024

Faint magnetic properties in primitive asteroid fragments suggest an early magnetic field strong enough to shepherd the growth of the outer planets.

Posted inNews

Straightening Out Uranus’s Magnetosphere

Damond Benningfield, Science Writer by Damond Benningfield 6 December 20246 December 2024

New analysis of Voyager 2 observations shows that the craft arrived amid gusty solar wind, muddying our ideas about the giant planet.

Una ilustración mostrando la Corriente de Florida entre Florida y las Bahamas
Posted inNews

La corriente de Florida podría estar desacelerándose, pero no por mucho

by Grace van Deelen 21 November 202419 December 2024

Una corrección necesaria a un conjunto de datos ampliamente utilizados redujo las estimaciones de los científicos de cómo se ha debilitado la circulación oceánica.

8 close-up images of rock.
Posted inEditors' Highlights

The Future of Martian Paleomagnetism

by Anna Mittelholz 12 November 20248 November 2024

Samples collected by the Perseverance Rover have great potential for providing insights into the history of Mars’ magnetic field.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

Eddy or Not: Do Eddies Actually Transport That Much Carbon?

17 April 202617 April 2026
Editors' Highlights

Amazon River Breezes Mimic Pollution in Clouds

17 April 202616 April 2026
Editors' Vox

Synergistic Integration of Flood Inundation Modeling Methods

10 April 202610 April 2026
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