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ICYMI: Watch a Replay of Last Night’s Aurora Borealis

A rare storm hit Earth on St. Patrick’s Day and amplified a stunning light show

Photo via Wikimedia Commons

A rare G4, otherwise known as a "severe" geomagnetic storm, hit Earth on St. Patrick’s Day, beginning around 10 a.m. ET, according to the National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Prediction Center.

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