Relating to, resembling, or characteristic of an aurora; involving the natural colored lights that appear in polar skies.
From Latin aurora 'dawn' plus English -al suffix. This adjective emerged in scientific usage during the 19th century as aurora studies became more rigorous.
Auroral storms are basically Earth's most spectacular light show—caused by solar activity, they've terrified and inspired humans for millennia, and now scientists can predict them days in advance.
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