What are auroras?

Hank Green, from SciShow, explains what auroras are. The auroras are generated by the charged particles from the solar wind that interact with the oxygen and nitrogen atoms from the atmosphere. As the solar wind is accompanied by high energies it makes the electrons of oxygen and nitrogen atom jump between electron levels and these jumps also give away photons in the form of light.

In any case, the fact that we have auroras means that Earths magnetic field works and that our atmosphere is still here. Yay.

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