Copyright:
Göran Strand
原文:
It was bright and green and stretched across the sky. This striking aurora display was captured last month just outside of �stersund, Sweden. Six photographic fields were merged to create the featured panorama spanning almost 180 degrees. Particularly striking aspects of this aurora include its sweeping arc-like shape and its stark definition. Lake Storsj�n is seen in the foreground, while several familiar constellations and the star Polaris are visible through the aurora, far in the background. Coincidently, the aurora appears to avoid the Moon visible on the lower left. The aurora appeared a day after a large hole opened in the Sun’s corona allowing particularly energetic particles to flow out into the Solar System. The green color of the aurora is caused by oxygen atoms recombining with ambient electrons high in the Earth’s atmosphere.
中文翻譯:
在瑞典�stersund附近捕捉到的這幅驚艷極光展示，展現出明亮的綠色，橫跨天空。這幅全景圖是由六個攝影畫面合併而成，幾乎涵蓋了180度的視野。特別引人注目的極光特徵包括它那如弧形般的掃描形狀和鮮明的輪廓。在前景中，可以看到Storsjön湖，背景中則可見幾個熟悉的星座以及北極星Polaris。巧合的是，極光似乎避開了左下角可見的月亮。這幅極光出現的前一天，恰好有一個大型的太陽日冕孔釋放了特別有能量的粒子進入太陽系。極光的綠色是由氧原子與高度大氣中環境電子重新結合所引起的。
#極光 #Aurora #瑞典 #Sweden #夜空 #Storsjön #北極星 #Polaris #攝影 #自然之美 #天文 #星空 #自然現象 #太陽活動 #光影魔法 #極光攝影
來源:NASA每日圖片
