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plasmas

Computer-generated visualization of solar plasma interacting with Earth’s magnetic field.
Posted inFeatures

Space Raindrops Splashing on Earth’s Magnetic Umbrella

by Laura Vuorinen, Adrian LaMoury, Emmanuel Masongsong and Heli Hietala 7 October 20227 October 2022

Though not as damaging as extreme space weather events, showers of plasma jets hit Earth’s magnetic shield every day—yet we’re only beginning to understand their effects.

Diagram showing the interior of the Sun
Posted inFeatures

Shake, Rattle, and Probe

by Damond Benningfield 25 August 202217 January 2023

Helioseismology allows scientists to study the interior of the Sun, solve some basic physics mysteries, and forecast space weather.

The solar corona is visible during the total solar eclipse on 21 August 2017.
Posted inNews

A “Dam” in the Corona May Make the Solar Wind Gain Its Unusual Speeds

by Alakananda Dasgupta 8 June 20228 June 2022

A new study supports the idea of a “helicity barrier” influencing the fluctuating stream of interplanetary plasma.

A poof of red and yellow light shoots out of a dark red and black star
Posted inNews

Coronal Dimmings Shine Light on Stellar CMEs

by Jenessa Duncombe 6 June 202225 August 2022

Coronal mass ejections from stars have eluded easy observation, so scientists are looking at what’s left behind.

Artist’s impression of China’s Tianwen-1 spacecraft en route to Mars.
Posted inEditors' Highlights

First Solar Wind Plasma Observations from the Tianwen-1 Mission

by Limei Yan 6 May 20227 September 2022

Solar wind plasma data captured by the Tianwen-1 probe while in transit to Mars represent an important step toward a new era of cooperative Martian space exploration.

Two plots showing the Cumulative probability of scintillation exceeding a certain value versus geomagnetic activity in July-December 2017.
Posted inEditors' Highlights

The Auroral E-region is a Source for Ionospheric Scintillation

by Michael P. Hickey 9 August 202111 August 2022

Observations reveal a connection between auroral particle precipitation and scintillation, indicating that the ionospheric E-region is a key source region for phase scintillation at auroral latitudes.

Plot showing K-H waves-related magnetic field variations correlated with the local geomagnetic B variations at Neumayer Station III.
Posted inEditors' Highlights

Satellite Data Reveal Magnetospause K-H Waves Impact Auroras

by Michael P. Hickey 5 August 202128 September 2021

Analysis of multiple satellite data has revealed a striking connection between K-H waves on the magnetopause, surface waves in the hot zone near the plasmapause, and auroral undulations.

Illustration of the spacecraft of NASA’s Magnetospheric Multiscale mission in space in front of reconnecting magnetic field lines
Posted inResearch Spotlights

Spacecraft Reveal New Details of Magnetic Reconnection

by Morgan Rehnberg 15 February 202118 January 2023

Energetic electrons are accelerated directly by magnetic reconnections and can act as tracers of large-scale magnetic field conditions.

Artist’s conception of the motion of charged particles in Earth’s magnetosphere
Posted inResearch Spotlights

A New Approach to Characterizing Space Plasmas

by Morgan Rehnberg 16 December 202013 October 2022

When plasma particle velocity distributions have multiple, distinct parts, treating each as a separate beam may yield more intuitive results.

Illustration showing the dayside magnetosphere and its surroundings
Posted inEditors' Vox

New Results Concerning Solar Wind Entry into the Magnetosphere

by D. G. Sibeck, Q. Zong, P. Escoubet, G. Le and H. Zhang 28 October 202010 March 2022

A new book describes recent results defining the many pathways and foreshock, bow shock, magnetosheath, and magnetopause phenomena connecting the solar wind to the dayside magnetosphere.

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RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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