Johannes Kepler’s landmark 1607 sunspot observations may have been made at the end of the solar cycle, helping constrain the start of the Maunder Minimum.
the Sun
Posted inResearch Spotlights
From Sun to Earth: A New Network for Comprehensive Space Weather Monitoring
The Chinese Meridian Project combines hundreds of instruments for a detailed, three-dimensional view of the solar-terrestrial environment.
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
Coronal Mass Ejection Gives Earth’s Magnetosphere Rare “Wings”
A massive disturbance in the solar wind caused Earth’s magnetosphere to fly without its usual tail.
Posted inEditors' Highlights
Open-Source MAGPRIME Supports Space Magnetism in the Heliosphere
MAGPRIME is a library of magnetic interference removal algorithms, including benchmarks, that can aid in the design of spacecraft by providing simulations to determine optimal magnetometer placement.
Posted inNews
Spiral Waves May Explain the Sun’s Baffling Rotation
New observations and models show a connection between high-latitude waves in the Sun’s interior and the different rates of spin between the solar equator and poles.
Posted inAGU News
Total Eclipse of the Sun
Things are looking up as millions of North Americans prepare to be dazzled by a celestial spectacle.
Posted inFeatures
Eclipse Science Along the Path of Totality
When a total solar eclipse sweeps across the United States on 8 April, scientists and enthusiasts alike will be there to document it.
Posted inFeatures
The End of the Eclipse
Scientists are studying how the Earth–Moon distance has changed over time, and what effect that change might have had on our planet. Future changes will extinguish total solar eclipses entirely.
Posted inEditors' Vox
Exploring Alfvén Waves Across Space—and Disciplines
A new book presents an interdisciplinary review of Alfvén wave research, sharing the latest insights from the solar, planetary, and terrestrial sciences.