This weekend is bringing good news for sky watchers as U.S. forecasters call for the northern lights to be visible over Vancouver and other parts of B.C.
The Space Weather Prediction Center based in Boulder, Colo., says auroral activity will be high on Saturday from Yellowknife, Edmonton and Winnipeg, with low visibility above Seattle.
On Sunday, the atmospheric phenomenon should be visible in Greater Vancouver.
The aurora borealis is created by electrons colliding with the upper reaches of the Earth香蕉视频直播檚 atmosphere.
According to the centre, the electrons are energized through 香蕉视频直播渁cceleration processes,香蕉视频直播� which allow them to follow the magnetic field of the planet down to the polar regions. There, the electrons collide with oxygen and nitrogen atoms, increasing the atoms香蕉视频直播� energy. It香蕉视频直播檚 as those atoms relax back down to lower energy states that light is formed.
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The auroral forms are made of many tall rays that look much like folds of cloth, the centre said. At night, these rays can form arcs that stretch from horizon to horizon. Close to midnight, the arcs often begin to twist and sway, as if being blown by the wind.
The light show typically appears anywhere from 80 to 500 kilometres above Earth香蕉视频直播檚 surface.
Of course, that香蕉视频直播檚 only if the skies are clear. The best way to view the night sky is to find a high-up spot as far away from artificial lights, such as from street lamps and buildings, as possible.
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ashley.wadhwani@bpdigital.ca
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