Happening of Aurora

You may be very delighted to see the wonderful scenes of northern lights from Earth, but have you ever thought how it happens, lets see.
Sun have huge magnetic field around it, which clashes with other magnetic fields in space, this led to throwing of heavy rocks and dust away from it. This is called Solar winds. Solar winds are very dangerous. But on earth we don't need to worry because of earth's own magnetic field arose due to spinning of molten iron over core. This magnetic field repels the dust particles making us safer. But when heavier rocks hit earth's magnetic field with great speed, the atmosphere shakes a little causing disturbance in surrounding a refraction of light causind auroras.