Scandinavia | featured news

The solar storm that sparked so much debate this week got its second wind overnight, rewarding aurora aficionados from the Arctic to the Lower 48 to Australia. We're almost getting used to great views of the northern lights from places like Iceland (see above), Scandinavia and Russia — but last night's lights were visible from the top tier of the United States as well.

Fast on the heels of a solar storm that delivered a glancing blow over the weekend — triggering bright auroras in Canada and Scandinavia — the sun released an even more energetic blast of radiation and charged plasma overnight that could disrupt GPS signals and the electrical grid Tuesday, especially at high latitudes, space weather experts warned Monday morning.

The spread of dense ash from the erupting Iceland volcano could force the cancellation of up to 500 commercial flights in Northern Ireland, Scotland and parts of Scandinavia, the European air traffic agency said Tuesday.