昴星团，又称七姐妹星团（M45），是天空中最著名的星团之一。即使在光污染严重的城市，人们也能用肉眼看到它明亮的恒星。这张由专业天文学家拍摄的长时间曝光影像，展现了昴星团前所未有的清晰度和细节。该影像拍摄于意大利的法加尼亚，覆盖了数倍于满月大小的天空区域。尘埃云环绕着昴星团，清晰可见。昴星团位于金牛座方向，距离我们约400光年。一个现代的传说认为，自星团被命名以来，其中一颗较亮的恒星变暗了，肉眼只能看到六颗姐妹星。但实际上，能看到的昴星团恒星数量可能多于或少于七颗，这取决于周围天空的黑暗程度和观察者视力的清晰度。

✨昴星团是天空中最著名的星团，即使在光污染严重的城市，人们也能用肉眼看到它最明亮的恒星。

🔭这张照片经过23小时的长时间曝光，拍摄于意大利的法加尼亚，展现了昴星团及其周围尘埃云的惊人细节，覆盖的天空区域是满月大小的数倍。

🌌昴星团也被称为七姐妹星团或M45，位于金牛座方向，距离地球约400光年。

🌠有一个现代传说，自星团被命名以来，其中一颗较亮的恒星变暗了，导致肉眼只能看到六颗姐妹星。

👁️实际上，能够看到的昴星团恒星数量可能多于或少于七颗，这取决于观测地点天空的黑暗程度和观测者视力的清晰度。

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.2024 December 9 Pleiades: The Seven Sisters Star Cluster Image Credit & Copyright: Francesco Pelizzo Explanation: 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 Pleiadescan be seen with the unaided eye even from the depths of alight-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 andM45,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 Tomorrow's picture: wooden meteors <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Amber StraughnSpecific rights apply.NASA Web Privacy,Accessibility, Notices; A service of:ASD atNASA /GSFC, NASA Science Activation& Michigan Tech. U.