Comparison of magnetic field structures for 20 coronal mass ejections at eruption versus Earth arrival highlights the importance of tracking structural evolution to refine space weather predictions.
solar activity
Posted inResearch Spotlights
Increasing Radiation Levels May Challenge Space Exploration
New research shows that solar radiation levels are growing 10% faster than previously believed and that the radiation environment in space will worsen with time.
Posted inEditors' Highlights
Fast CMEs Continue to Decelerate in the Outer Heliosphere
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.
Posted inEditors' Highlights
New Observations of Mysterious Radar Echoes
Exploring the relationship between solar extreme ultraviolet radiation flux and 150-km radar echoes.
Posted inResearch Spotlights
Preserving a 45-Year Record of Sunspots
Maps reveal how the Sun’s magnetic field evolves through solar cycles.
Posted inResearch Spotlights
A Better Way to Predict Space Storms
A new model of solar winds could reduce false alarms.
Posted inEditors' Highlights
A Survey of Solar Radio Burst Statistics
National solar radio archive records have substantial missing data potentially affecting the ability to benchmark extreme solar events.
Posted inEditors' Highlights
Where Did the Water Go on Mars?
Primordial solar storm conditions are believed to have significantly enhanced the loss of water and other atmospheric volatiles in Mars’ history.
Posted inEditors' Highlights
Imaging the Sun’s Atmosphere
The technique of heliospheric imaging could be valuable for future space weather operations.
Posted inResearch Spotlights
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.