Most fast coronal mass ejections will be decelerated into ambient solar wind quickly in the inner heliosphere, but some of them continue the deceleration with an even larger amplitude beyond 1 AU.
Journal of Geophysical Research: Space Physics
Posted inResearch Spotlights
Sounding Rockets Probe the Northern Lights Above Norway
Scientists measure how the aurora affects winds in the upper atmosphere.
Posted inEditors' Highlights
A Close-in Look at Saturn’s Periodic Space Bubble
When it comes to Saturn’s space environment, summer wins over winter in controlling the periodic flows of electrically charged particles and magnetic fields.
Posted inEditors' Highlights
Where the Solar Wind Meets Mars
A comprehensive look at how the solar wind is diverted around Mars, including the relative strength of the three biggest forces at work in this region.
Posted inEditors' Highlights
The “Magnetic-less” Magnetotail Boundary
Most boundaries in space are governed by magnetic fields, but not far behind the Earth, where the field change across the magnetopause plays very little role in the pressure balance relationship.
Posted inResearch Spotlights
Tracing Electric Currents That Flow Along Earth’s Magnetic Field
A new study uses satellite data to examine a worldwide system of electric currents in greater detail than ever before.
Posted inEditors' Highlights
Solar Wind Sets the Magnetosphere Ringing
A combination of data from satellites and ground-based instruments gives new insight into solar wind-magnetosphere-ionosphere interactions.
Posted inResearch Spotlights
Jets of Ionospheric Cold Plasma Discovered at the Magnetopause
The lower-energy particles may play a larger role in magnetic reconnection than previously believed, influencing space weather near Earth.
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How Earth’s Outer Radiation Belts Lose Their Electrons
A new analysis of three space storms reveals the mechanisms of particle loss from the Van Allen belts.
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Is There a Greenhouse Effect in the Ionosphere, Too? Likely Not
Controversial observations of long-term changes in the ionosphere appear to be explained by the Sun’s 11-year cycle of activity, not human greenhouse gas emissions.