Northern Lights UK: how did the aurora borealis light up the skies this weekend?

The northern lights illuminated the night skies on Bonfire Night

The northern lights made a reappearance last night (5 November) and illuminated the skies as the Met Office confirms the sightings spread across the UK. The Met Office said the lights were “observed across Scotland, clearly visible from Shetland webcams, and sightings reported across some central and eastern parts of England”.

Professor Don Pollacco, department of physics at the University of Warwick, said the phenomenon was caused by “the interaction of particles coming from the sun, the solar wind, with the Earth’s atmosphere – channelled to the polar regions by the Earth’s magnetic field.

“It’s actually a bit like iron filings and the field of a bar magnetic. The solar wind contains more particles when there are sun spots, as these are regions on the sun’s surface where the magnetic field is interacting with the plasma in the sun, and the particles can be released.

“Once the particles are channelled into the Earth’s atmosphere they interact with molecules and have distinctive colours (eg oxygen molecules produce green light, nitrogen red light etc) and patterns such as light emissions that look like curtains or spotlights. These shapes change quickly over timescales of minutes/seconds.”

So how did the northern lights look across the UK?