聖布拉斯角上空的火球
Fireball over Cape San Blas
來源：Jason Rice｜發表日期：2025-07-23
你見過火球嗎？ 在天文學中，火球是一種非常明亮的流星--其亮度至少與金星相當，甚至可能比滿月還亮。火球非常罕見--如果你看到一顆，你很可能會終生難忘。 從物理上講，火球是一種源自小行星或彗星的小石頭，當它穿過地球大氣層時，通常會留下由氣體和塵埃組成的逐漸消失的煙跡。 火球不太可能發生任何單一的大型地面撞擊--大部分岩石可能在碎裂成許多小塊時蒸發了。這張照片是上週在美國佛羅里達州聖布拉斯角的枯木海灘拍攝的。 拼湊起來每日天文拼圖
原文：Have you ever seen a fireball? In astronomy, a fireball is a very bright meteor -- one at least as bright as Venus and possibly brighter than even a full Moon. Fireballs are rare -- if you see one you are likely to remember it for your whole life. Physically, a fireball is a small rock that originated from an asteroid or comet that typically leaves a fading smoke trail of gas and dust as it shoots through the Earth's atmosphere. It is unlikely that any single large ground strike occurred -- much of the rock likely vaporized as it broke up into many small pieces. The featured picture was captured last week from a deadwood beach in Cape San Blas, Florida, USA. Piece it Back Together: Astronomy Puzzle of the Day
※ 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。