The planet’s elusive aurorae are much colder than expected, which is how they evaded detection for so long.
aurorae
Posted inNews
Watching a Solar Event from All Angles
A fleet of spacecraft captured unprecedented details of the major solar outbursts in May and June 2024.
Posted inResearch Spotlights
Radar Reveals Electrical Activity in the Ionosphere
A new method could improve understanding of communication disruptions.
Posted inEditors' Highlights
Unusual Occurrence of STEVE: An Aurora-Like Glow
STEVE is a mysterious purple-white arc near the aurora, typically seen after space disturbances called substorms. A new study reveals a rare STEVE event without a substorm, prompting questions about its origin.
Posted inNews
Scientists Captured the First Glimpse of a Rare Polar Aurora
After a decade-long search, scientists captured a type of elusive aurora on camera.
Posted inResearch Spotlights
Space Hurricanes Swirl in the Southern Hemisphere, Mostly in Summer
Previous studies of the recently discovered space weather feature focused on the Northern Hemisphere. Dozens hit the Southern Hemisphere each year, new research shows.
Posted inScience Updates
Ionospheric Fireworks Illuminate Auroral Science
A sounding rocket experiment set off a spectacular nighttime light show over Scandinavia as it produced new insights into ionospheric behavior near an aurora.
Posted inResearch Spotlights
Aurora Records Reveal Shortened Solar Cycle During Maunder Minimum
Fastidious night sky observations from Korean historical texts provide a novel source of evidence for an altered solar cycle during periods of low magnetic activity.
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.