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magnetic fields & magnetism

A computer simulation of solar wind entry layer and flux transfer events (green lines) in Mercury’s dayside magnetosphere
Posted inResearch Spotlights

Solar Wind a Major Driver of Atmospheric Sodium at Mercury

by Morgan Rehnberg 27 May 202227 May 2022

MESSENGER observations show a 50% rise in atmospheric sodium-group ions during periods of high solar wind activity.

Installation of new pipeline through the Bemidji oil spill site in Minnesota
Posted inResearch Spotlights

Microbes Might Munch Magnetic Minerals at Oil Spill Site

by Sarah Stanley 19 May 202219 May 2022

New experiments at an old oil spill site in Minnesota suggest that nonbiological processes alone may not account for decreased magnetization.

Líneas de campo magnético simuladas en amarillo alrededor de la luna de Saturno Triton.
Posted inResearch Spotlights

Encontrando los océanos ocultos de las lunas usando campos magnéticos inducidos

by Morgan Rehnberg 5 May 20225 May 2022

Un análisis de componentes principales de modelos especulativos puede predecir con más seguridad que las técnicas anteriores la p^ppresencia de un océano subsuperficial en un objeto planetario.

A back-scattered electron image of an experimental charge showing a miniaturized model of the core-mantle boundary equilibrated at pressure-temperature conditions thought to prevail during core formation.
Posted inEditors' Highlights

New Results Deepen the Mystery of Earth’s Early Magnetic Field

by Carolina Lithgow-Bertelloni 14 April 20227 April 2022

How was Earth’s early magnetic field produced? New experimental results and modeling show that the energy source could not have come from exsolution of lithophile elements from the core.

A blue ring of auroral emission glows above Saturn’s north pole.
Posted inNews

Saturn’s Powerful Winds Explain Changes in the Length of Its Day

by Katherine Kornei 17 March 202221 March 2022

Atmospheric winds moving at more than 7,000 kilometers per hour distort Saturn’s magnetic field, revealing why spacecraft have measured changes in the length of a day on the ringed world.

Simulated magnetic field lines in yellow around Neptune’s moon Triton.
Posted inResearch Spotlights

Finding Moons’ Hidden Oceans with Induced Magnetic Fields

by Morgan Rehnberg 9 March 20225 May 2022

A principal component analysis of speculative models can more confidently predict the presence of a planetary object’s subsurface ocean than previous techniques.

A “black smoker” chimney
Posted inResearch Spotlights

Exploration and Evaluation of Deep-Sea Mining Sites

by Aaron Sidder 14 February 202214 February 2022

Two studies chart new territory for the fledgling deep-sea mining industry through advances in the identification and analysis of seafloor hydrothermal mounds.

Inspecting mine drainage in a river
Posted inEditors' Vox

Using Hematite to Decipher Past Climates and Environments

by Zhaoxia Jiang, Qingsong Liu, Andrew Roberts, Mark J. Dekkers, Vidal Barrón, José Torrent and Sanzhong Li 7 February 202220 April 2022

The magnetic and color properties of the mineral hematite give clues to past environmental conditions and is being used for paleoclimatic reconstruction.

An Isinglass sounding rocket launch from Poker Flat, Alaska
Posted inResearch Spotlights

Converting Auroral Observations into 3D Structures

by Morgan Rehnberg 3 January 20222 February 2022

Using 1D and 2D data sources as model constraints yields fine-scale insights into real-world aurorae.

Artist’s rendering of Earth’s magnetic field, which connects the North Pole with the South Pole
Posted inNews

Oldest Pole Reversal Shows Early Earth Was Well Suited for Life

by Zack Savitsky 15 December 202115 December 2021

Australian rocks 3.25 billion years old preserved the oldest signs of Earth’s stable magnetic field and quickly moving crust, critical elements of life’s evolution.

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