When is the best time to watch the Geminid meteor shower tonight?
The Geminid meteor shower peaks overnight tonight. Here's when to look for the most shooting stars — and where to aim your gaze.
Northern lights may be visible in 17 states (and maybe more) tonight
Auroras may be visible from Alaska to Illinois as an incoming coronal mass ejection is expected to slam into Earth.
Sun unleashes intense X-class solar flare, triggering radio blackouts across Australia
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.
Northern lights may be visible in 15 states tonight
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.
Sun unleashes powerful X-class solar flare, knocking out radio signals across Australia
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.
Photographer captures eerie red halo hovering over the Italian Alps in rare ‘elve’ sighting (photo)
High above a storm, a mysterious red ring appeared for a split second. Here's how one photographer captured the elusive "elve."
Northern lights may be visible in 14 states tonight
Auroras may be visible from Alaska to New York as a speedy solar wind is set to spark geomagnetic storm conditions overnight.
Earth just got hit by a stealth solar storm no one saw coming
The quiet arrival offers another indication that the sun is moving into the declining phase of its 11-year cycle.
Pilot captures jaw-dropping northern lights show from 36,000 feet (photos)
When a severe G4 geomagnetic storm hit, this Dreamliner pilot had the perfect front-row seat.
Is an aurora cruise worth it? I joined Hurtigruten’s Signature Voyage to find out
Sailing through Arctic Norway under the aurora, this voyage redefines what cruising and chasing the northern lights can really be.