Charged particles sometimes leak out of the Van Allen radiation belts and enter Earth's atmosphere, where they collide with atoms, especially above the polar regions, where the magnetic field moves down into the denser parts of the atmosphere. One result of this is .

Explanation:

In this phenomenon , the charged particles moves into the earth's atmosphere with very high velocity . By which ionization of air takes place . By which light particles of different colors are seen in the sky .

These colors just gives the scene of fireworks and this phenomenon is called

" Aurora Boreals " or " Northern lights "

3. dark matter

empty space could also be a simple vacuum