What are the Northern Lights and why only the North Pole has the Northern Lights

The legendary goddess Aurora, who rules the dawn of the Northern Lights.

Auroras are present in both the Antarctic and the North Pole. Auroras are present in both the South and North Poles, and the auroras appear in the Northern Hemisphere.

It is called the Northern Lights.

When the aurora occurs in the Southern Hemisphere, it is called the Southern Aurora. The aurora not only has a variety of shapes, but also has a dazzling and attractive color, but such a beautiful aurora also has a certain danger.

Conditions for the appearance of the auroraThe aurora appears over the high magnetic latitude of the planet and is a brilliant and colorful luminous phenomenon. And the Earth's aurora, a stream of high-energy charged particles from the Earth's magnetosphere and the Sun (solar wind.

It is produced by the excitation (or ionization) of molecules or atoms in the upper atmosphere. There are three conditions for the formation of auroras: atmosphere, magnetic field, and high-energy charged code sail particles. These three are indispensable. Auroras occur not only on Earth, but in the solar system.

There are also auroras on some other planets with magnetic fields.

Auroras exist in both the South and North Poles, with the Northern Hemisphere being called the Northern Lights and the Southern Aurora appearing in the Southern Hemisphere. The aurora not only has a variety of shapes, but also has a dazzling and attractive color, but such a beautiful aurora also has certain dangers.

1.The formation of the aurora.

First of all, when the charged particles of the sun reach the vicinity of the earth, they are attracted to the south pole and the north pole by the earth's magnetic field, and when they enter the upper atmosphere of the polar region, the light produced by the collision of atoms and molecules forms a colorful aurora.

2.The observation time of the aurora.

The aurora can be seen all year round, but it is difficult to see in the summer, and it is easier to see in the Nordic region from September to April. However, in the Mohe region of Heilongjiang Province in China, it is possible to see the aurora all year round.

3.The color of the aurora.

The color of the aurora is determined by the gases in the earth's atmosphere, nitrogen atoms emit blue light, oxygen atoms emit green and red light, and the earth's atmosphere is mainly oxygen and nitrogen. So the aurora is blue and green.

4.The dangers of the aurora.

Although the aurora is beautiful, it will disturb the magnetic field, change the position of the satellite, and even more seriously, interrupt the signal of the satellite, and even interfere with the power transmission, so that the power is temporarily lost**.

The above is the knowledge about the aurora, the more famous observation sites in the world are: Sweden, Denmark, Russia, Finland, North America, Canada, Norway, Alaska, the North Pole, the Antarctic, and the Aurora can also be seen in Mohe, Heilongjiang, China. However, the aurora can only be better viewed in an open field that is not affected by other light sources.

There are auroras in the north and south poles, and those formed in the Antarctic region are called the Southern Lights, and those formed in the Arctic region are called the Northern Lights. The Earth's magnetic field is shaped like a funnel, with the tip facing the north and south poles of the Earth, so the charged particles emitted by the Sun settle along the "funnel" of the Earth's magnetic field and enter the polar regions of the Earth. The upper atmosphere of the poles glows when bombarded by the solar wind, forming auroras.

Auroras often appear in the sky above the geomagnetic pole at latitude, generally in the form of bands, arcs, curtains, and radials, and these shapes are sometimes stable and sometimes change continuously. There are three conditions for the formation of auroras: the atmosphere, the magnetic field, and high-energy charged particles. All three are indispensable.

Due to the geomagnetic field, these energetic particles are turned to the polar regions, so auroras are commonly found in high magnetic latitudes. Auroras often occur in the range of about 25° to 30° from the magnetic pole, and this area is called the aurora zone. The region between 45° and 60° of geomagnetic latitude is called the weak aurora zone, and the area of the geomagnetic latitude below 45° is called the micro aurora zone.