Science ❯Astronomy ❯Solar Activity

Sunspots

Solar Flares Coronal Mass Ejections X-class Flares Solar Cycles Geomagnetic Storms AR3842 Active Regions Magnetic Fields Hyperactive Sunspot AR3664 Historical Events Impact on Earth Technology Impact Sunspot Region 4087 AR4087 Sunspot Regions Sunspot AR 3664 Solar Flare Classification Earth Impacts Sunspot AR3664 Historical Observations Solar Cycle

X1.2 Solar Flare from AR4114 Disrupts Pacific Radio Communications

Heightened instability in Earth-facing sunspot Active Region 4114 carries elevated odds of further major flares

NASA Warns of Potential Solar Storms as Sunspot AR4087 Faces Earth

Sunspot AR4087 Produces Year’s Strongest Solar Flare, Disrupting Communications Globally

NASA Observes Twin X-Class Solar Flares

Kepler's 1607 Sunspot Drawings Rewrite Solar Cycle History

Sunspot AR3664 Returns, Potential for More Powerful Solar Storms

Recent Auroras Mark Most Intense Display in 500 Years, NASA Reports