冰島上空的龍形極光
Dragon Aurora over Iceland

來源:Jingyi Zhang & Wang Zheng|發表日期:2024-01-14
你見過天上的龍嗎?雖然真正的飛龍並不存在,但在 2019 年,冰島上空出現了一條巨大的龍形極光。 極光是由太陽日冕上的一個洞引起的,它將帶電粒子排入太陽風,太陽風順著不斷變化的行星際磁場吹向地球磁層。 當其中一些粒子撞擊地球大氣層時,它們激發了原子,原子隨後發出光:極光。這個標誌性的景象如此迷人,以至於攝影師的母親也跑出來觀看,並被拍到在前景中。 隨著 2025 年太陽極大期的臨近,我們活躍的太陽繼續顯示出異常多的日珥、日珥絲、太陽黑子和大型活躍區。
原文:Have you ever seen a dragon in the sky? Although real flying dragons don't exist, a huge dragon-shaped aurora developed in the sky over Iceland in 2019. The aurora was caused by a hole in the Sun's corona that expelled charged particles into a solar wind that followed a changing interplanetary magnetic field to Earth's magnetosphere. As some of those particles then struck Earth's atmosphere, they excited atoms which subsequently emitted light: aurora. This iconic display was so enthralling that the photographer's mother ran out to see it and was captured in the foreground. Our active Sun continues to show an unusually high number of prominences, filaments, sunspots, and large active regions as solar maximum approaches in 2025.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。