The aurora australis, also known as the southern lights, on the horizon over Lake Ellesmere on the outskirts of Christchurch, New Zealand. AFP
The northern lights over a farm near Pulaski, Wisconsin. An intense solar storm means the aurora borealis is gracing the skies farther south than usual. AP
The night sky near Cross Ranch State Park north of Bismarck, North Dakota. AP
The northern lights over St Mary's lighthouse in Whitley Bay on the north-east coast of England. PA
The northern lights over the village of Podolye, Russia, 70km east of St Petersburg. AP
The early morning sky near Washtucna, Washington State. AP Photo
The aurora australis visible over Lake Ellesmere on the outskirts of Christchurch, New Zealand. AFP
The aurora australis visible over Lake Ellesmere on the outskirts of Christchurch, New Zealand. AFP