Northern lights seen over Catalonia for second time in a year
Rare phenomenon could still be seen over the weekend as intense solar storm hits the Earth
Rare phenomenon could still be seen over the weekend as intense solar storm hits the Earth
A rare phenomenon that occurred in May could happen again, as an alert for an intense solar storm has been activated once more
Geomagnetic storm prompts sightings including most relevant one in Montsec observatory in 150 years