Aurora - one of the beautiful gifts of nature & a sign presenting the state of earth's atmosphere..
An aurora is a natural light display in the sky particularly in the high latitude (Arctic and Antarctic) regions, caused by the collision of energetic charged particles with atoms in the high altitude atmosphere. The charged particles originate in the magnetosphere and solar wind and, on Earth, are directed by the Earth's magnetic field into the atmosphere.These natural lights are so beautiful & bright that you can even read a newspaper in the night and apart from that if the aurora's are much frequent they signify the increase in solar storms.(see video presentation for brief)
Reference - Wikipedia (Aurora)
Presentation - by Aakash.
Videos used in presentation - from youtube.
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