Aurora Borealis at Redmires Reservoir, Sheffield, UK, on 17th March 2015. A severe solar storm allows the Northern Lights phenomenon to be seen as far south as the Peak District National Park, here reflecting in the calm waters of Sheffield's Redmires Reservoir. Credit: Graham Dunn/Alamy Live News

- Image ID: EHWH5R
Aurora Borealis at Redmires Reservoir, Sheffield, UK, on 17th March 2015. A severe solar storm allows the Northern Lights phenomenon to be seen as far south as the Peak District National Park, here reflecting in the calm waters of Sheffield's Redmires Reservoir. Credit: Graham Dunn/Alamy Live News
Graham Dunn / Alamy Stock Photo
Image ID: EHWH5R