The Northern Lights were visible across parts of the UK and Ireland overnight - and the Met Office says they could be back tonight (Tuesday, September 2). The colourful Northern Lights display was caused by a fast-moving coronal mass ejection from the Sun on Saturday evening that was forecast to reach Earth between Monday and early Tuesday.

Meteorologists previously said the resulting geomagnetic activity could make the aurora visible further south than usual, provided skies are dark and clear. Stargazers on Monday night reported sightings in north-east Scotland, northern England and the Midlands, with photos on social media showing the lights as far south as West Cork in Ireland.

Today and Wednesday will see night-time viewing conditions worsen , but northern Scotland and northern

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