Aurorae are caused by the interaction between energetic charged particles from the sun and gas molecules in the upper atmosphere of the Earth.

极光是由地球大气上层的气体分子与来自太阳的高能带电粒子相互作用产生的。

Aurorae are caused by the interaction of the solar wind with Earth's magnetic field and so are particularly prevalent at the poles where the magnetic forces are strongest.

极光是太阳风与地球磁场相互作用产生的，在两极磁场最强烈的地方，极光很常见。