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magnetic fields & magnetism

Artist’s depiction of a huge rope of fire stretching out from the Sun, with Earth pictured to scale, very small in the corner
Posted inResearch Spotlights

Coronal Mass Ejection Gives Earth’s Magnetosphere Rare “Wings”

by Nathaniel Scharping 2 August 20242 August 2024

A massive disturbance in the solar wind caused Earth’s magnetosphere to fly without its usual tail.

A black-and-white image from an electron microscope shows a gray substance made up of many smaller uneven balls of material (similar to Nerds Rope candy).
Posted inResearch Spotlights

Microbes Likely Form Magnetite in the South China Sea

Rachel Fritts, Science Writer by Rachel Fritts 22 July 202423 August 2024

Researchers sampled sediment cores and found that where magnetite was abundant, methane-producing bacteria were as well.

Posted inEditors' Highlights

Open-Source MAGPRIME Supports Space Magnetism in the Heliosphere

by Astrid Maute 2 July 20241 July 2024

MAGPRIME is a library of magnetic interference removal algorithms, including benchmarks, that can aid in the design of spacecraft by providing simulations to determine optimal magnetometer placement.

Photo of Uranus, which appears as a periwinkle-colored circle surrounded by pale blue rings
Posted inResearch Spotlights

Studying the Mystery of Uranus’s Curiously Weak Radiation Belts

by Nathaniel Scharping 1 July 20241 July 2024

The belts may not be weak at all—instead, they may be simply changing speed thanks to the planet’s asymmetric magnetic field.

An illustration of plant life beneath the ocean with an aurora in the sky
Posted inNews

A Magnetic Low May Have Paved the Way for Complex Life

by Saugat Bolakhe 5 June 20245 June 2024

Multicellular life blossomed when Earth’s magnetic field was at an all-time low.

A map and graph from the paper.
Posted inEditors' Highlights

The Not-So-Quiet Cretaceous Quiet Zone

by Bjarne S. G. Almqvist 4 June 20243 June 2024

A new study finds that Earth’s magnetic field intensity varied significantly during the Cretaceous Normal Superchron, providing insights into the operation of the geodynamo during superchrons.

An artist’s rendering of a striped gas planet close to a star
Posted inNews

Magnetic Barriers Might Explain Mysterious Hot Jupiters

by Jonathan O’Callaghan 3 June 20243 June 2024

Hot Jupiters might end up very close to stars because a magnetic field halts their progress—and future observations could confirm the idea.

Diagram and graphs from the paper.
Posted inEditors' Highlights

GAD is Enough!

by Daniel Pastor-Galán 10 May 202425 September 2024

An exhaustive study in China finds no need to invoke extreme true polar wander nor anomalous geomagnetic fields in the early Neoproterozoic.

Photo of Amanda Hendrix and the journal cover.
Posted inEditors' Vox

Introducing the New Editor-in-Chief of JGR: Planets

by Amanda Hendrix 8 May 20247 May 2024

Learn about the person taking the helm of JGR: Planets and their vision for the coming years.

Diagrams from the study
Posted inEditors' Highlights

Greenland Could Have Records of 3.7-billion-year-old Geomagnetic Fields

by Agnes Kontny 7 May 20246 May 2024

Scientists argue that paleomagnetic field tests preserve a geomagnetic field record acquired as chemical remnant magnetization in banded iron formations in southwest Greenland.

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