2025 年英仙座飛碟的酷 GIF
A Cool GIF of a 2025 Perseid

來源:Renaud & Olivier Coppe|發表日期:2025-08-16
當地時間 8 月 12 日凌晨 2 點左右,在地球上比利時布拉班特瓦隆夏斯特爾的一個花園裡,相機在皎潔的月光下拍攝時電池沒電了。但在此之前,它捕捉到了用於製作這張酷酷的動畫 gif 的畫面,畫面中是一顆絢麗的英仙座流星和一條被稱為 "持久列車 "的揮之不去的可見軌跡。英仙座流星是來自大型週期性彗星斯威夫特-塔特爾的尾部的一顆快速移動的塵埃,在衝壓的作用下被加熱至熾熱,並在以每秒 60 公里的速度閃過高層大氣時被汽化。與流星的短暫閃光相比,它的包裹狀痕跡確實很持久。作為明亮流星的特徵之一,煙霧狀的持續軌跡通常可以在 60 至 90 公里的高空隨風飄蕩數分鐘。
原文:The camera battery died about 2am local time on August 12, while shooting in the bright moonlit skies from a garden in Chastre, Brabant Wallon, Belgium, planet Earth. But not before it captured the frames used to compose this cool animated gif of a brilliant Perseid meteor and a lingering visible trail known as a persistent train. The Perseid meteor, a fast moving speck of dust from the tail of large periodic Comet Swift-Tuttle, was heated to incandescence by ram pressure and vaporized as it flashed through the upper atmosphere at 60 kilometers per second. Compared to the brief flash of the meteor, its wraith-like trail really is persistent. A characteristic of bright meteors, a smoke-like persistent train can often be followed for many minutes wafting in the winds at altitudes of 60 to 90 kilometers.
※ 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!
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