昴宿星團七姐妹星團
Pleiades: The Seven Sisters Star Cluster
來源：Francesco Pelizzo｜發表日期：2024-12-09
你見過昴宿星團嗎？即使你見過，你可能也從未見過如此巨大和清晰的星團。昴宿星團可能是天空中最有名的星團，即使在光汙染嚴重的城市深處，也能用肉眼看到昴宿星團明亮的星星。 不過，如果在黑暗的地方長時間曝光，昴宿星團周圍的塵埃雲就會變得非常明顯。這幅從義大利 Fagagna 拍攝的 23 小時曝光照片所覆蓋的天空面積是滿月的幾倍。 昴宿星團也被稱為七姊妹星和 M 45 ，位於大約 400 光年之外的金牛座方向。 一個帶有現代色彩的常見傳說是，自該星團被命名以來，其中一顆較亮的恆星逐漸暗淡，因此只有六顆姊妹星是肉眼可見的。不過，昴宿星團實際可見的恆星數量可能多於或少於七顆，這取決於周圍天空的暗度和觀測者視力的清晰度。 新內容：另類多昴星團首頁
原文：Have you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it as large and clear as this. Perhaps the most famous star cluster on the sky, the bright stars of the Pleiades can be seen with the unaided eye even from the depths of a light-polluted city. With a long exposure from a dark location, though, the dust cloud surrounding the Pleiades star cluster becomes very evident. The featured 23-hour exposure, taken from Fagagna, Italy covers a sky area several times the size of the full moon. Also known as the Seven Sisters and M45, the Pleiades lies about 400 light years away toward the constellation of the Bull (Taurus). A common legend with a modern twist is that one of the brighter stars faded since the cluster was named, leaving only six of the sister stars visible to the unaided eye. The actual number of Pleiades stars visible, however, may be more or less than seven, depending on the darkness of the surrounding sky and the clarity of the observer's eyesight. New: Alternative multi-APOD front page
※ 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。