its twilight curtain/red over green and blue
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The colors of the Northern Lights can vary, but they typically include shades of green, pink, purple, and blue. These colors are produced by different gases in the Earth's atmosphere interacting with solar particles.
The ions in the ionsphere react to make brilliant multicolored lights in the coldest regions. What temp, I don't know though.
The aurora borealis night-sky displays are also known as the northern lights, or the northern polar lights.(or the southern (polar) lights, depending on where you live)In the Southern Hemisphere this phenomenon is also known as the aurora australis.
The Northern Lights, or Aurora Borealis, occur in the thermosphere and exosphere layers of Earth's atmosphere. They are typically observed between 60 and 400 kilometers above the Earth's surface. The stratosphere and troposphere layers do not contain the Northern Lights.
It is extremely rare to see the northern lights in China as it is not located within the auroral zone where the lights are most commonly visible. The best places to see the northern lights are typically in high-latitude regions such as Scandinavia, Canada, or Alaska.
There is a monument to the northern lights in Utsjoki, Finland. The "Aurora Tower" is a structure that pays tribute to the natural phenomenon of the northern lights and provides a platform for viewing them in the Arctic region.
In the book "Northern Lights" by Philip Pullman, Lyra Belacqua is around 11 years old at the beginning of the story.