Aurora borealis

colorful display of natural lights that can sometimes be seen at nighttime in northern regions, northern lights

Auroras (or aurorae) [sing: aurora] are natural colored light displays, which are usually observed in the night sky, particularly in the polar zone. Some scientists therefore call them "polar auroras" (or "aurorae polaris").In northern latitudes, it is known as the aurora borealis, named after the Roman goddess of the dawn, Aurora, and the Greek name for north wind, Boreas. It often appears as a greenish glow (or sometimes a faint red), as if the sun were rising from an unusual direction. The aurora borealis is also called the northern lights, as it is only visible in the North sky from the Northern Hemisphere. The aurora borealis most often occurs from September to October and from March to April.
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Noun
1. the aurora of the northern hemisphere
(synonym) northern lights
(hypernym) aurora

aurora borealis, northern lights, display of colored lights in the sky

The Northern lights