日落的一年
A Year in Sunsets

來源:Wael Omar|發表日期:2024-12-21
從 2023 年 4 月到 2024 年 3 月,一年的日落在這些疊加的全景圖中沿著西部地平線軌跡呈現。這一連串精心策劃的影像是在所示月份的第 21 天附近從俯瞰埃及開羅的同一地點拍攝的。但是,對於地球上的任何地點來說,每年太陽落山的最北端(圖右)和最南端都是日至日。至日一詞來自拉丁語,意為 "太陽 "和 "靜止"。在至日這一天,太陽每天在天空中執行的季節性軌跡似乎會暫停,並在其一年一度的天體旅行中改變方向。當然,太陽會在今天這一天靜止不動。世界協調時 2024 年 12 月 21 日 9 時 21 分的至日是太陽最南端偏角的時刻,也是天文學上北方冬季和南方夏季的開始。
原文:A year in sunsets, from April 2023 to March 2024, track along the western horizon in these stacked panoramic views. The well-planed sequence is constructed of images recorded near the 21st day of the indicated month from the same location overlooking Cairo, Egypt. But for any location on planet Earth the yearly extreme northern (picture right) and southern limits of the setting Sun mark the solstice days. The word solstice is from Latin for "Sun" and "stand still". On the solstice date the seasonal drift of the Sun's daily path through the sky appears to pause and reverse direction in its annual celestial journey. Of course the Sun reaches a stand still on today's date. The 21 December 2024 solstice at 09:21 UTC is the moment of the Sun's southernmost declination, the start of astronomical winter in the north and summer in the south.
※ 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。