x     The aurora is one of the most awe-inspiring natural phenomena visible from Earth. It is so dramatic that many people, even those with only a passing interest in astronomy, really want to see it. Many organized trips, cruises, and flights are arranged to see the popular and stunning sight of the aurora. Aurora can regularly be seen from the Arctic and Antarctic regions of the world. In the southern hemisphere the Aurora Australis (southern lights) can, at times of peak activity also is