瑞典，星空下的北极光
MAY 27, 2013
Aurora Borealis, Sweden
Photograph by Natalia Robba, Your Shot
We were lucky enough to witness some very early auroras over the Abisko Mountain Lodge on March 1, 2013. The skies were clear, with only wispy clouds interfering come nighttime.
Abisko National Park in northern Sweden is rated as one of the best places in the world to try and see this natural light phenomenon, being located perfectly beneath the central parts of the auroral oval. During my last day there, a coronal stream collided with our magnetic field and produced very early and intense aurorae as soon as darkness set.
2013年的3月1号，阿比斯库山旅馆，我们有幸及早目睹房屋上空的极光。星空澄澈，伴随着天际的点点云朵，夜幕降临了。
位于瑞典北部的阿比斯库国家公园，是世界上观摩自然光现象的最佳胜地之一，这里正好处于极光椭圆区的中心区域下方。刚好在我此行的最后一天，一场冕流与地球磁场摩擦碰撞，随着夜色的落幕，不久就能看到极光辉映苍穹。
注：极光是地球周围的一种大规模放电的过程。来自太阳的带电粒子到达地球附近，地球磁场迫使其中一部分沿着磁场线集中到南北两极。当他们进入极地的高层大气时，与大气中的原子和分子碰撞并激发，产生光芒，形成极光。
http://photography.nationalgeogr ... ra-borealis-sweden/