The powerful X1.1 solar flare from sunspot region 4298 sparked strong radio blackouts on the sunlit portion of Earth at the time of eruption.
Auroras may be visible from Alaska to New York as a speedy solar wind and incoming coronal mass ejection are expected to buffet Earth's magnetic field.
A powerful X1.9 solar flare from new sunspot AR4299 triggered strong radio blackouts, as giant sunspot AR4294 rotates into view with more activity likely.
High above a storm, a mysterious red ring appeared for a split second. Here's how one photographer captured the elusive "elve."
Auroras may be visible from Alaska to New York as a speedy solar wind is set to spark geomagnetic storm conditions overnight.
The quiet arrival offers another indication that the sun is moving into the declining phase of its 11-year cycle.
When a severe G4 geomagnetic storm hit, this Dreamliner pilot had the perfect front-row seat.
Sailing through Arctic Norway under the aurora, this voyage redefines what cruising and chasing the northern lights can really be.
Solar storms don't just trigger impressive auroras; they can scramble the GPS systems U.S. farmers rely on.
The eruption was accompanied by a CME, which is currently under analysis to assess whether any part of it is headed for Earth.
