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Auroras
极光
Auroras are bright lights that appear in the sky over the North and South Poles.
极光是出现在北极和南极上空的明亮光辉。
They are commonly known as northern and southern lights.
它们通常被称为北极光和南极光。
Auroras occur when particles of plasma shoot out of the sun and collide with gases in the Earth’s atmosphere.
当等离子粒子从太阳射出并与地球大气层中的气体相撞时，就会出现极光。
Different types of gas can create different colours of light.
不同类型的气体可以产生不同颜色的光。
Oxygen creates green light, while nitrogen creates violet light.
氧气产生绿光，而氮气产生紫光。
Auroras on other planets often have different colours because of the different gases that are common in their atmospheres.
其他行星上的极光通常有不同的颜色，因为它们的大气层中有不同的常见气体。
On gas giants like Jupiter and Saturn, auroras are ultraviolet.
在像木星和土星这样的气态巨行星上，极光是紫外光。
Although auroras are nice to look at, they can also be dangerous.
虽然极光看起来很美，但它们也可能是危险的。
The solar particles can cause damage to technology on Earth.
太阳粒子可能会对地球上的科技造成损害。
Scientists hope to learn more about auroras so that they can prevent possible problems in the future.
科学家们希望更多地了解极光，这样就可以预防未来可能出现的问题。
