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With little warning, an unexpected geomagnetic storm occurred on August 23rd 2017

southernlights_strip.jpg

With little warning, an unexpected geomagnetic storm occurred on Aug. 23rd, ringing Earth’s poles with the luminous glow of auroras. Peter Sayers photographed the display from the banks of the Forth River in Tasmania, Australia

“These fantastic auroras came out of left field while I was watching the southern horizon,” says Sayers. “There were beams like search lights for hours–a beautiful naked eye display.”

What happened? The interplanetary magnetic field (IMF) near Earth tipped south, opening a crack in our planet’s magnetosphere. Solar wind blew in through the opening and fueled the display.

http://spaceweather.com/

This entry was posted on August 26, 2017 at 5:27 pm and is filed under 2017, astronomy, Galaxy, Uncategorized with tags . You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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