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plasmas

CASSIOPE-satellite-measure-Earth-atmosphere-ionosphere
Posted inResearch Spotlights

Tracking Ions at the Edge of the Atmosphere

Leah Crane by L. Crane 2 August 20165 July 2022

The first results from a recently launched satellite hold promise for studying solar storms, the very top of Earth's ionosphere, and how the atmosphere is evolving.

Posted inResearch Spotlights

Patches of Low Electron Density Help to Heat the Ionosphere

by A. K. Higginson 23 June 201612 October 2022

Simulations show how changes in electron density can trap electromagnetic waves and heat electrons in the ionosphere.

Jicamarca-Radio-Observatory-array-Peru
Posted inResearch Spotlights

Mysterious "Necklace Echoes" in the Sky Explained

by Mark Zastrow 3 June 201622 March 2023

Scientists studying a 50–year–old mystery in the Earth's ionosphere have come up with their best explanation of it yet.

Posted inResearch Spotlights

Electrons Thrown Off Course in Near-Earth Magnetic Reconnection

by A. K. Higginson 26 April 201618 July 2023

NASA Magnetospheric Multiscale (MMS) mission detects energy differences in electrons scattered by magnetic reconnection.

Dipolarization fronts (DFs), bursty bulk flows (BBFs), flux transfer events (FTEs), and Kelvin-Helmholtz instability (KHI) in a high-resolution simulation of an idealized substorm.
Posted inScience Updates

Great Mysteries of the Earth's Magnetotail

by M. I. Sitnov, V. G. Merkin and J. Raeder 21 March 201618 July 2023

Workshop on Magnetotail Reconnection Onset and Dipolarization Fronts; Laurel, Maryland, 16–18 September 2015

Posted inNews

Human Radio Transmissions Create Barrier to "Killer Electrons"

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 16 December 20151 March 2023

An interaction between radio waves and the Van Allen radiation belts creates a bubble around the Earth that high-energy electrons can't penetrate.

Posted inResearch Spotlights

What Makes Jupiter's Aurora Pulse?

by Mark Zastrow 13 November 20154 May 2022

The aurora crowning Jupiter's poles—the most powerful in the solar system—flares up when plasma is injected into its magnetic field.

Posted inResearch Spotlights

New Clues to Mysterious Hiss in Earth's Plasmasphere

by Mark Zastrow 26 October 201527 September 2022

An analysis of the electromagnetic "hiss" that surrounds Earth reveals it's not just static; there's a signal hidden within, which may help scientists uncover its source.

Posted inResearch Spotlights

Magnetized Collisionless Shock Waves Measured in the Lab

by C. Minnehan 6 October 201512 October 2022

Scientists create collisionless shock waves to better understand the phenomenon in nature.

Posted inResearch Spotlights

Spacecraft Records Rising-Tone Magnetosonic Waves

by C. Minnehan 11 September 201520 July 2022

A rising tone in wave frequencies suggests a complicated, nonlinear series of interactions between electromagnetic sound waves and protons near the magnetic equator.

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