Traditional Culture Encyclopedia - Weather inquiry - Why is the sky especially bright in the middle of the night?
Why is the sky especially bright in the middle of the night?
1. The moon shines at night, and water droplets or ice crystals in the cloud scatter the moonlight in all directions, making the whole sky look bright and abnormal.
2. When the sun releases energy during the day, it will hit the gas molecules and atoms in the atmosphere, which will excite them and release light. At night, these gas molecules and atoms are still at high energy level, so they will continue to shine, making the sky look brighter.
Artificial light sources such as lights and electronic screens in the city will illuminate the whole city at night and make the sky look as bright as day. This situation is usually called light pollution, which has a certain impact on human health and environmental ecology.
4. In some weather conditions, such as cloudy days and smog, water droplets, ice crystals or particles in the air will scatter light, making the whole sky look brighter.
In polar regions, due to the continuous exposure of the sun during extreme daytime, nitrogen and oxygen in the atmosphere will continue to glow, making the sky look extremely bright.
In a word, there may be various reasons for the sky to be particularly bright at night, depending on geographical location, weather conditions, time and other factors.
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