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The Northern lights spanning the sky over the Shetland Isles |
WHAT ARE THE NORTHERN LIGHTS?The Northern lights, also known as the Aurora Borealis, are caused when eruptions on the Sun throw matter towards Earth causing the matter to glow and creating ethereal displays in the night-time skies. An aurora is common in the high latitude like the Arctic and Antarctic regions.
The aurora borealis (or the northern lights) is named after the Roman goddess of dawn, Aurora, and the Greek name for the north wind, Boreas, by Pierre Gassendi in 1621. Auroras seen near the magnetic pole may be high overhead, but from farther away, they illuminate the northern horizon as a greenish glow or sometimes a faint red, as if the Sun were rising from an unusual direction. Discrete aurorae often display magnetic field lines or curtain-like structures, and can change within seconds or glow unchanging for hours, most often in fluorescent green.
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