Aurora Gallery

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http://science.nasa.gov/spaceweather/aurora/gallery_17apr02.html
  • sauceruney

    from NASA's website:

    On April 15, 2002, twisted magnetic fields above sunspot 9906 erupted and hurled a coronal mass ejection (CME) toward Earth. The expanding cloud reached our planet two days later and triggered a G2-class geomagnetic storm that raged for nearly 24 hours...

    sauceruney
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