The aurora is regarded as one of the most beautiful spectacles in nature  If we take a spacecraft, cross the north and south poles of the earth, and look at the earth from distant space, we will see a shining halo around the earth's magnetic poles, this The ring is called aurora eggs  Because they are a bit squashed on the side facing the sun, and the side facing away from the sun is slightly stretched, they take on the shape of an egg  The aurora eggs are in continuous change, sometimes bright and sometimes dark, sometimes extending toward the equator, and sometimes shrinking toward the pole  The halo at midnight appears to be the widest and brightest  Long-term observation statistics show that the most common places for aurora to appear are the two places near the north-south magnetic latitude of 67 degrees  The ring-shaped area is called the southern aurora and northern lights, respectively  Aurora activity occurs almost every day in the aurora  In the inner area surrounded by the aurora egg, usually called the polar cap area, in this area, aurora appears On the contrary, there are fewer opportunities for the aurora than in the aurora at lower latitudes
In low- and middle-latitude regions, especially near the equator, aurora rarely appears
The polar cap area is surrounded by the aurora eggs, and the northern lights is located south of the North polar cap area