Here's why:
* Colorful: The aurora displays a vibrant range of colors, including green, red, blue, purple, and white.
* Shimmers: The auroral lights dance and shimmer across the sky, creating a mesmerizing spectacle.
* Dark Polar Sky: Auroras are primarily visible in the high-latitude regions near the Earth's magnetic poles, where the sky is dark for extended periods.
Let me know if you have any other questions!