2, aurora, often appear in the latitude near the earth's magnetic pole above the atmosphere of color luminescence phenomenon. Generally speaking, it is banded, solitary, intermittent or radial. Among the various forms of energy created by the sun, such as light and heat, one kind of energy is called "solar wind". The solar wind is charged particles ejected by the sun, and it is a powerful stream of charged subatomic particles, which can cover the earth. The solar wind flows around the earth over the earth and hits the earth's magnetic field at a speed of about 400 kilometers per second. The earth's magnetic field is shaped like a funnel, with its tip facing the north and south poles of the earth, so charged particles emitted by the sun settle along the "funnel" of the earth's magnetic field and enter the polar regions of the earth. The upper atmosphere of the poles, bombarded by the solar wind, will glow and form aurora. What is formed in the Antarctic region is called Antarctic light. What is formed in the North Pole is called the Northern Lights.