Geomagnetic storms induce fast plasma flows next to the aurora and affect space weather. Lin et al. explain the origin of a special “dawnside” plasma stream that occurs only during extreme storm events.
magnetic fields & magnetism
Posted inEditors' Highlights
Magnetofossils Unveil Paleoredox Conditions in Extreme Climate
The Paleocene-Eocene Thermal Maximum, a thermal pulse about 56 million years ago, is an analog for future global warming. A new magnetofossil study shows progressive ocean deoxygenation.
Posted inFeatures
Shake, Rattle, and Probe
Helioseismology allows scientists to study the interior of the Sun, solve some basic physics mysteries, and forecast space weather.
Posted inFeatures
11 Discoveries Awaiting Us at Solar Max
Each solar cycle might seem like the same old story, but one thing has changed significantly since the previous solar maximum–our technology.
Posted inNews
Swinging Strength of Earth’s Magnetic Field Could Signal Inner Core Formation
The magnetic record stored in rocks documents the liquid core’s behavior and possibly when the inner core formed. Whether it formed half a billion or more than a billion years ago, however, is up for debate.
Posted inEditors' Highlights
Modification of Energetic Particles Loss Cone During Storms
The loss cone of energetic particles in the Earth’s inner magnetosphere is substantially modified during disturbed times, with important implications for the radiation-belt and ring current modeling.
Posted inNews
Earth’s Wobbly Inner Core Illuminated by Nuclear Explosions
Shock waves from Cold War era nuclear tests gave seismologists a glimpse of the inner core. Its wobbly rotation could explain phenomena such as the periodic change in the length of a day.
Posted inENGAGE, News
High Schoolers Measure Earth’s Magnetism from Space
The experiment was one of the winning projects of the Astro Pi Challenge, in which hundreds of young scientists analyzed data collected from the International Space Station.
Posted inNews
Unlocking the Magmatic Secrets of Antarctica’s Mount Erebus
Unprecedented images of Mount Erebus’s inner workings show the unique trappings of a CO2-rich rift volcano.
Posted inNews
More Than Marsquakes: InSight Yielded Magnetism, Weather Discoveries
A secondary suite of instruments on the Mars lander produced a first look at magnetic fields from the planet’s surface.