'Machine-gun sun' could bring auroras to more than a dozen states this Independence Day weekend
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Fourth of July celebrations across the United States this weekend could be accompanied by light shows in the night skies, as a string of powerful solar eruptions appear set to strike Earth.The sun has been especially hyperactive over the past few days — firing off 10 M-class solar flares over 24 hours that have been accompanied by multiple coronal mass ejections (CMEs), which are set to slam into Earth on July 3 and July 5. CMEs are large, fast-moving clouds of magnetized plasma and solar radiat
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