Aurora is so gorgeous, how is it formed? Which parts of China are prone to aurora?

Aurora is a visual effect produced by the interaction between the earth's magnetic field and charged particles, which usually appears around the earth's magnetic pole. The earth's magnetic field draws charged particles brought by the solar wind to the earth's poles. These charged particles collide with gas molecules in the earth's atmosphere, making the gas molecules in an excited state. When they return to a stable state, they will release light energy, thus forming aurora.

Aurora mainly appears around the earth's magnetic poles, including the North Pole and the South Pole. In China, due to the geographical location, aurora rarely appears. Only when the aurora activity is particularly strong can it be seen on the mountains or plateaus in remote areas such as Qinghai and Xinjiang, but the probability of its occurrence is very low, which requires luck and some conditions. In addition, if you want to observe the aurora at close range, you can go to Finland, Sweden, Norway and other countries in northern Europe. The northern part of these countries is one of the best places to enjoy the aurora.

To see the aurora, you need to meet the following conditions:

1. Night: Aurora mainly appears at night and early morning, because the sunlight is too strong to be observed during the day.

2. Polar regions: Aurora will only appear near the north and south poles of the earth, so you need to go to the Arctic Circle or Antarctic Circle to have a chance to observe it.

3. Night: During the period when the aurora may appear, the sky needs to be dark enough, so it is best to observe at night when there is no moon or the moon is not too bright.

4. Sunny day: The weather must be sunny, and there is no cloud or rain and snow to block the aurora.

5. Low light pollution: stay away from cities or lighting facilities to avoid light pollution interfering with observation results.

6. Active Sun: Aurora is produced by the interaction between charged particles of the sun and gases in the earth's atmosphere, so active solar activity is needed.

7. Magnetic storm: It is related to the active solar activity, and strong auroras need to be seen during the magnetic storm.

8. No light damage: There should be no strong light in the surrounding environment at night, because light damage will interfere with the vision of observing aurora.

9. Patience: Even if it is possible to see the aurora, it does not necessarily appear instantly, so you need to wait patiently.

10. professional equipment: aurora shooting requires certain professional photographic equipment and knowledge, as well as a full understanding and mastery of photographic technology.