Measurements by a Mars-orbiting spacecraft indicated heating and chemistry changes in the planet’s atmosphere following an extreme solar eruption last year.
solar activity
Posted inResearch Spotlights
Mysterious Aurora Borealis Feature Explained for the First Time
High-speed particles cause indentations in the magnetopause to form “throat auroras.”
Posted inEditors' Highlights
Anatomy of a Flux Rope Hurtling Through the Solar System
Pancaking and erosion can explain a lot of the structural change in magnetic flux ropes as they fly evolve during their supersonic flight through the inner solar system.
Posted inResearch Spotlights
Capturing Structural Changes of Solar Blasts en Route to Earth
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.
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.