Stratus Clouds, Greenland (photo by Bryan and Cherry Alexander). Eight hundred miles south of the North Pole, stalactite-like stratus clouds - churned by winds - and the light of a bruised dawn paint an apocalyptic portrait over Inglefield Bay.
Royal Observatory Greenwich and BBC's Sky at Night magazine astronomy photo of the year James Woodend of the UK submitted a photo of a green aurora pictured in Iceland's Vatnajökull National Park reflected in Jökulsörlön Glacier lagoon.
- Last night, as predicted, a gust of solar wind hit Earth's magnetic field, sparking bright Valentine's auroras around the Arctic Circle. Øystein Lunde Ingvaldsen sends this picture of the sweet lights over Bø in Vesterålen, Norway