Northern lights is the name of a light phenomena often seen in the
northern regions. The northern lights have had a number of names
scientific name for the phenomena is Aurora Borealis, which is Latin
and translates into the red dawn of the north. It was the Italian
scientist Galileo Galilei who first used the expression. On the
latitude where Galileo was living, northern lights consist of mainly
The northern lights, aurora borealis, has fascinated and baffled humans for thousands of years. It is related to myths and stories from around the world. For according to the Japanese believe it ensures a long and happy marriage for you and your loved ones. No wonder that Coastal Steamer (Hurtigruten) has become a favorite destination for lovers of tourists from Japan? Some sites warned it about births, on arguing. In the old days, children warned waving to the Northern Lights, because it came down and took them.
WHAT CAUSES THEM?
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.
On their way down towards the geomagnetic poles, the solar particles
are stopped by Earth´s atmosphere, which acts as an effective shield
against these deadly particles.
the solar particles are stopped by the atmosphere, they collide with
the atmospheric gases present, and the collision energy between the
solar particle and the gas molecule is emitted as a photon - a light
particle. And when you have many such collisions, you have an aurora -
lights that may seem to move across the sky.
In order for an observer to actually see the aurora with the naked eye, about a 100 million photons are required.
SEE VIDEOs of THE NORTHERN LIGHTs.
NATURE´S OWN FIREWORKS
Northern lights is a result
of our atmosphere shielding against solar particles which would
otherwise make our planet uninhabitable.
Galilei (1564-1642), Italian mathematician, philosopher and astronomer.
Among his discoveries are the four Galiliean moons around Jupiter.
Although he wasn´t the first to see northern lights, he gave it it´s