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Home > All Images > 1999 > June > 24 Jun 1999

Images Dated 24th June 1999

Available as Framed Photos, Photos, Wall Art and Gift Items

Choose from 5 pictures in our Images Dated 24th June 1999 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Aurora Borealis display with clouds Featured 24 Jun 1999 Print

Aurora Borealis display with clouds

Aurora Borealis. Clouds partially obscuring a dramatic multicoloured Aurora Borealis, or Northern Lights display. Aurorae are caused by the interaction between energetic charged particles from the Sun and gas molecules in the upper atmosphere about 100 kilometres up. A stream of charged particles, called the solar wind, flows out into space continuously from the Sun at speeds of 400-500 kilometres per second. On reaching Earth, the charged particles are drawn by Earth's magnetic field to the poles, where they collide with gas molecules in the upper atmosphere, causing them to emit light. Photographed from Finland

© PEKKA PARVIAINEN/SCIENCE PHOTO LIBRARY