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solar wind
Posted inEditors' Highlights
Solar Eclipses May Initiate Disturbances in Geospace
The statistical evidence from 21 years of data suggests that a solar eclipse may trigger a geomagnetic substorm, which is a disturbance in the Earth’s magnetosphere and ionosphere.
Posted inResearch Spotlights
Probing Rare Hot Plasma Flows in the Upper Atmosphere
Postmidnight flows appear to be triggered by the same mechanism that drives more frequently observed evening flows.
Posted inNews
Magnetic Tangles Drive Solar Wind
Energetic collisions between magnetic fields produce gusty solar wind.
Posted inNews
Could Jupiter’s Heat Waves Help Solve a Planetary Energy Crisis?
Infrared observations reveal that Jupiter’s upper atmosphere is much warmer than models predict. The discovery may be a clue to finding missing heat sources in other giant planets.
Posted inFeatures
Space Raindrops Splashing on Earth’s Magnetic Umbrella
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.
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
A “Dam” in the Corona May Make the Solar Wind Gain Its Unusual Speeds
A new study supports the idea of a “helicity barrier” influencing the fluctuating stream of interplanetary plasma.
Posted inResearch Spotlights
Solar Wind a Major Driver of Atmospheric Sodium at Mercury
MESSENGER observations show a 50% rise in atmospheric sodium-group ions during periods of high solar wind activity.
Posted inEditors' Highlights
Watching the Substorms Grow
Updated procedures enable consistent use of a wide network of polar magnetometers to monitor energy flow into the tail of Earth’s magnetosphere during the growth phase of substorms.