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Northern Lights: What are the aurorae borealis?

The northern lights appear in the sky when charged particles from the sun slam into molecules in the atmosphere, releasing energy in the form of colorful lights. ....

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Northern Lights: Stargazers share snaps of aurora seen in the UK, US and Canada as solar storm hits

The typically green and pink light shows occur when electrically charged particles from the Sun excite gases in the Earth s atmosphere, causing them to glow. ....

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Northern lights caused by powerful electromagnetic waves that accelerate electrons toward Earth

Researchers at the University of Iowa have proven the northern lights are caused by Alfven waves accelerating electrons toward Earth until they collide with the upper atmosphere. ....

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Northern lights caused by accelerated electrons crashing into Earth

Northern lights caused by accelerated electrons crashing into Earth
Dan Avery For Dailymail.com
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The northern lights, or Aurora Borealis, have fascinated humanity for millennia but exactly how they re created has remained a bit of a mystery.
Now scientists say they have definitive proof the spectacular cosmic shimmer is caused by powerful electromagnetic waves, called Alfven waves, that accelerate electrons toward Earth under certain conditions.
It was in 1946 that Russian physicist Lev Landau first theorized electrons surfed on the electric field of a wave, a process he called Landau damping.
In a study published this week in the journal Nature Communications, scientists at the University of Iowa confirmed Landau s predictions and definitively pointed to the effect as causing the northern lights. ....

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