Why does an Aurora Australis happen?

Question

1 paragraph and If possible provide a link

Answer 1

Aurora occurs usually in the South Pole. The colour is pale green and it appears when the Sun emits solar wind. This solar wind is able to escape the Sun's gravity and when it meets the Earth, it interacts with Earth's magnetic field. The charged particles in the solar wind collide with Earth's magnetic field, ionizing oxygen and nitrogen atoms to release light. This light appears for about 15 - 40 minutes and recurs from 2 - 3 hours.