What are the forms and colors of aurora?

Aurora has no fixed shape and different colors. The colors are mostly green, white, yellow and blue, and occasionally it will show gorgeous purple, elegant and mysterious.

Aurora sometimes appears for a short time, just like the fireworks of the festival flashed in the air and disappeared without a trace; Sometimes it can shine in the sky for hours; Sometimes like a ribbon, sometimes like a colorful giant screen; Some are silvery white, like cotton wool and white clouds, solidified.

Some auroras are simple in structure, such as curved arcs, showing light green and reddish tones; Sometimes the aurora appears on the horizon, just like the morning light; Sometimes it is as bright as camellia and red; Sometimes the aurora gathers together like a curtain; Sometimes it shoots many beams, just like proud peacocks and butterflies with flapping wings.

Although scientists have basically understood the aurora at present, it still leaves many problems that need people to continue to explore.