Sky & Phenomenon

[ Sky & Phenomenon ]

This light trail is the meteor, the unseen dust particle is called meteorid. Meteors occur at about 80-120km above the ground and last for less than a second.

	After a series of big explosion on the sun we could see beautiful Northern Lights 21.01.2005. Northern lights originate from our sun. During large explosions and flares, huge quantities of solar particles are thrown out of the sun and into deep space.
	These plasma clouds travel through space with speeds varying from 300 to 1000 kilometers per second. But even with such speeds (over a million kilometer per hour), it takes these plasma clouds two to three days to reach our planet.
	When they are closing in on Earth, they are captured by Earth's magnetic field (the magnetosphere) and guided towards Earth's two magnetic poles; the geomagnetic south pole and the geomagnetic north pole.
	During the Viking period, northern lights were referred to as reflections from dead maidens. The well-known Scottish expression for auroras is "merry dancers".
	In order for an observer to actually see the aurora with the naked eye, about a 100 million photons are required.