
The Sun sends lots of energy and small particles .The protective magnetic field around Earth shields this.
But the Sun doesn't send the same amount of energy all the time.During one kind of solar storm called a coronal mass ejection, the Sun burps out a huge bubble of electrified gas that can travel through space at high speeds.

There, the particles interact with gases in our atmosphere resulting in beautiful displays of light in the sky. Oxygen gives off green and red light. Nitrogen glows blue and purple.
