Northern Lights return to paint the skies
A large solar storm has begun to hit Earth, producing northern lights visible across Europe, including in Portugal. It could cause power outages.
Northern Lights observed in Portugal
A powerful solar storm began affecting Earth on Monday and is producing Northern Lights, including in areas where they are not usually visible.
Northern lights recorded in Portugal after major solar storm hit Earth
They are expected to continue on Tuesday, but to weaken during the day.
Northern lights observed in Portugal after major solar storm hits Earth
Solar eruptions, known as coronal mass ejections, which can take several days to reach Earth, cause these events, producing the aurora borealis and aurora australis when they interact with Earth's magnetic field.
