Gorgeous aurora appears in Scotland. What do you need to know to watch it?

aurora is a plasma phenomenon and one of the most spectacular and invincible scenes in nature. It is because of the charged particle flow of the sun, that is, the solar wind enters the earth's magnetic field, and a colorful and beautiful brilliance appears at high altitude near the north and south poles of the earth, and it often appears at night. The aurora of the earth is produced by the high-energy charged particle flow from the earth's magnetosphere or the sun that excites molecules or atoms in the upper atmosphere.

The aurora of the earth is caused by the collision of charged particles from the sun with molecules above the two poles of the earth. In the inversion layer, as the height rises, the temperature will also rise. When the solar storm blows to the earth, the inversion layer will release negative charges, which will be like static electricity? Hissing? The voice. Therefore, when people appreciate the beauty of the aurora, they can not only marvel at the unpredictable light and shadow, but also hear the hissing sound like the voice of the sky. It adds a touch of fantasy to the aurora. Color of aurora

The color of aurora is determined by the air composition and height. Because the aurora is produced by the impact of electrons entering the atmosphere on gas molecules, the color of the aurora is determined by the height of different gases and impacts and the distance from the ionosphere. Low-altitude oxygen about 1 kilometers from the ground will produce green light, and oxygen about 3 kilometers from the ground will produce red light. Hydrogen will produce blue or purple light. Sometimes, there are even rarer orange or white aurora. The aurora australis and northern lights

are called the aurora australis when they appear near the south pole, and the aurora borealis when they appear in the north pole. But it is often known as the Northern Lights. When the north and south poles rush into the atmosphere, auroras will appear at the same time, and the auroras of the north and south poles are mirror images of each other and have the same shape. Planet with aurora

It's not just the earth that has aurora. In the huge solar system, some huge gas planets, such as Jupiter, Saturn, Uranus and Neptune, all have strong magnetic fields, so they will have aurora just like the earth. However, because of their different atmospheric compositions, the colors of aurora are also different. Capturing the aurora

The gorgeous aurora has many followers. Because people's visual recognition is limited, we need some special astrophotography equipment to help us capture this magical scene. Top ten places to watch

1. fairbanks, Alaska, USA: From late August to mid-April every year, fairbanks, Alaska is the main view of the aurora in North America, which is always in the center of the aurora belt and is known as? Global aurora capital? .

2. Canada, Yukon

3. Iceland, Reykjavik

4. Norway, Tromso

5. Northern Finland

6. Northern Russia

7. Sweden, Biscu

8. Greenland

9. Scotland.