<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["fr", "en"].<end_of_turn>
<start_of_turn>user
Quelles sont les causes des aurores boréales, également connues sous le nom d’aurores boréales ?<end_of_turn>
<start_of_turn>model
The Northern Lights, or Aurora Borealis, are caused by collisions between electrically charged particles from the sun that enter the Earth's atmosphere. These particles are blown towards the Earth by the solar wind and are largely deflected by the Earth's magnetic field. However, the Earth's magnetic field is weaker at either pole and therefore some particles enter the atmosphere and collide with gas particles. These collisions emit light, which we see as the dancing lights of the north. The color variations are due to the type of gas particles that are colliding. The most common auroral color, a pale yellowish-green, is produced by oxygen molecules located about 60 miles above the Earth. Rare, all-red auroras are produced by high-altitude oxygen, at heights of up to 200 miles. Nitrogen produces blue or purplish-red aurora.<end_of_turn><eos>