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Beautiful Aurora Display

October 27, 2011

It’s been a while I posted something, consider this a semi-hiatus from blogging. I will try to post something from time to time. I have posted several posts on Auroras. Here is another one with video and pictures taken by astronauts on ISS while passing over Indian Ocean on Sep 17th 2011. They took several  images and compiled a video which shows spectacular Aurora display. This particular Aurora display was a result of Coronal Mass Ejection event which occurred in the Sun on Sep 14th 2011, leading to stirring of the earth’s magnetic field and excitation of nitrogen and oxygen molecules in earth’s atmosphere. Greenish part of the Aurora glow is contributed by emission from excited oxygen molecule while blue or purple glow is from nitrogen molecule. Enjoy the Video. Towards the end of the video you can notice some specks and bright glows on earth’s surface which are infact forest wild fires and agricultural fires in Australia.

Image and video credit: NASA

Filed under: Science,Video

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