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.An incredible light show illuminates a snowy mountain scene, bathing a waterfall in spectacular breathtaking colour...Photographer Dario Sastre, 36, said watching the Northern Lights over a glacier took his breath away...And then a superb geomagnetic storm - a disturbance in the earth's magnetic field often causing beautiful skies - flooded the panorama...increase in the solar wind pressure initially compresses the magnetosphere and the solar wind's magnetic field interacts with the Earth's magnetic field and transfers an increased energy into the magnetosphere...Pictured: The Northern lights appear over a house in Jokulsarlon, Iceland..© Dario Sastre/Solent News & Photo Agency.UK +44 (0) 2380 458800.