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plasmas

A plume of material erupting from the Sun.
Posted inEditors' Highlights

Why Subsequent ICMEs are More Geoeffective

by Michael Balikhin 23 July 202523 July 2025

A new study demonstrates how an interplanetary coronal mass ejection (ICME) clears the path for following transients and explains why subsequent ICMEs are more geoeffective.

An artist’s depiction of two Martian orbiters. One is sending a signal to the other that looks like a purple light.
Posted inResearch Spotlights

Orbiter Pair Expands View of Martian Ionosphere

Sarah Stanley, Science Writer by Sarah Stanley 20 June 202519 June 2025

Radio signals sent between two Mars orbiters—rather than between an orbiter and an Earth-based receiver—capture new insights into atmospheric dynamics.

A network of antenna sticks up from a snowy landscape and connected by mesh wires stretch far off into the distance. Snowy mountains are on the horizon.
Posted inResearch Spotlights

Nudging Earth’s Ionosphere Helps Us Learn More About It

Sarah Stanley, Science Writer by Sarah Stanley 17 June 202517 June 2025

New observations and simulations capture the physics at play across each of the three main ionospheric regions.

Four seemingly identical, octagonal, disklike structures, each with several various thin antennas extending outward at various angles, appear to be floating in a closely spaced cluster in space. In the background, on the right side of the image, is the round shape of the planet Earth, encircled by translucent, overlapping blue and purple lines.
Posted inResearch Spotlights

New Insights into an Enigmatic Form of Magnetic Reconnection

Sarah Stanley, Science Writer by Sarah Stanley 11 April 202511 April 2025

A new study deepens understanding of magnetic field behavior recently discovered by NASA in Earth’s magnetosphere.

Graph from the paper.
Posted inEditors' Highlights

Prediction of Equatorial Plasma Bubbles for Navigation and Communication

by Alberto Montanari 7 March 20257 March 2025

Scientists demonstrate a new technique to predict the formation of equatorial plasma bubbles, a crucial space weather phenomenon affecting satellite-based communication and navigation systems.

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.

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.

Eighteen photos in a grid. Each features a background of green light reminiscent of the northern lights, with clusters of red dots in the middle.
Posted inResearch Spotlights

Radar Reveals Electrical Activity in the Ionosphere

by Saima May Sidik 18 December 202416 July 2025

A new method could improve understanding of communication disruptions.

A black-and-white artist’s depiction of Earth’s Van Allen radiation belts—two half-oval shapes extending out to the left and right of Earth (to show a cross section of the belts).
Posted inResearch Spotlights

Audible Storm Waves Could Turbocharge Earth’s Radiation Belts

Sarah Stanley, Science Writer by Sarah Stanley 16 October 202416 October 2024

Electromagnetic chorus waves could generate more extreme radiation levels than previously thought, posing severe hazards for Earth-orbiting spacecraft.

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How Earthquakes Shake Up Microbial Lake Communities

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Editors' Highlights

Mapping the Whereabouts of Continents

24 July 202523 July 2025
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JGR: Space Physics Launches New Instrumentation Article Type

23 July 202521 July 2025
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