2013: The Aurora Borealis and the Telegraph

by Patti Norton The aurora borealis is also known as the northern lights. This occurs in the sky of the northern hemisphere. (The same phenomenon occurs in the southern hemisphere, where it is named the aurora australis.) The aurora borealis is a glowing or flickering light of natural origin which is sometimes seen at night in the sky. In addition to the sun’s radiation, cosmic rays from outer space come pouring into the atmosphere. They create secondary radiations and electrified particles. Some cosmic rays fail to get through the atmosphere. The more penetrating ones traverse the entire thickness of our blanket of air and reach the earth. A large amount of meteoric matter is always falling through the atmosphere. The smallest pieces are no bigger than grains of dust, but they plunge into the atmosphere at speeds of 25 or more miles per second. The atoms of all elements […] Read More