quinta-feira, 8 de agosto de 2013

The sun's polarity is about to flip!

It happens about every 11 years and astronomers don't know why -- but they know the signs.

The sun is reaching its solar maximum. We've been seeing a typical increase in solar flares that can potentially damage satellites and interfere with communications on the ground. But it also makes for some beautiful auroras! The sun's north pole has already changed polarity and astronomers predict it'll take 3 to 4 months for the south pole to catch up. Read more.

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