The Northern Lights illuminated skies across the UK on Friday and Saturday evenings, with sightings stretching far beyond their usual Arctic strongholds. The BBC reports that particularly strong solar activity made the aurora borealis visible as far south as Devon, Hampshire and Kent on Saturday night, where displays are normally unthinkable. The Guardian notes that sky-gazers in Sheerness, Kent, photographed the display despite heavy local light pollution. BBC Weather Watchers images captured green and purple hues in Saltburn-by-the-Sea, pink haze in Winterton-on-Sea, Norfolk, purple glows in Salisbury and Owston Ferry, and curtains of pink, blue and green in Gourock, Inverclyde. Kendal in Cumbria and Stenness in Orkney also hosted striking scenes.

The surprise is how far south the auroral oval was pushed. The BBC explains that when geomagnetic activity reaches 200 nanotesla, the aurora is visible in northern Britain but not the south. On Saturday evening, activity levels reached 600nT — three times that threshold — meaning the lights could be seen across the whole of the UK, a much rarer phenomenon. What is usually a treat reserved for travellers in Norway or Iceland became a nationwide spectacle visible from suburban back gardens and coastal piers, according to EyeNews, which says the storm produced one of the most vivid auroral displays across the British Isles in years.

The display traces to powerful coronal mass ejections (CMEs) unleashed by the Sun toward Earth late last week, per the BBC. Charged particles captured by Earth's magnetic field are funnelled toward the magnetic poles, where they collide with oxygen and nitrogen in the upper atmosphere and emit photons of coloured light. The Guardian quotes the Met Office explaining that oxygen produces green and, at higher altitudes, rare red auroras, while nitrogen creates blue and purple hues. The Met Office says solar wind particles travel at about 1 million mph, and interactions are strongest when the solar wind's polarity opposes Earth's magnetic field.

Experts previously said 2026 would be a peak year for aurora-spotting because the Sun is in a heightened state of activity as part of its 11-year natural cycle — a prediction the BBC, Guardian and Daily Mail all repeat. EyeNews reports the Sun is operating near the peak of Solar Cycle 25, with a major solar flare erupting October 6 and the ejected plasma striking Earth's magnetosphere on October 10. During solar maximum, coronal mass ejections occur more frequently, driving geomagnetic storms strong enough to push displays far further south than normal — which is exactly what unfolded over Britain this weekend.

For anyone worried about the storm itself, the Daily Mail reports that geomagnetic activity is safe — Earth's atmosphere protects people from the radiation — though it can interfere with technology. The stakes here are spectacle rather than danger: EyeNews says the auroral oval pushed dramatically southward, giving southern counties like Kent, Devon and Cornwall faint naked-eye views with deep violet and crimson tones captured brilliantly on camera, while Scotland saw bright green curtains with intense red tops visible to the naked eye.

The Met Office said sightings could continue to be possible during clear skies until Tuesday, across Scotland and similar geomagnetic longitudes — so anyone who missed this weekend may get another chance. The BBC advises looking northwards away from bright streetlights, and looking through a mobile phone camera: in low light our eyes rely on rod cells, which perceive colour poorly, so night vision is effectively black-and-white, while cameras do not share that limitation. EyeNews adds that peak activity typically falls between 10pm and 2am local time, and recommends letting your eyes adjust to darkness for about 20 minutes before looking.