Copyright:
VegaStar Carpentier
原文:
Do you see it? This common question frequently precedes the rediscovery of one of the most commonly recognized configurations of stars on the northern sky: the Big Dipper. This grouping of stars is one of the few things that has likely been seen, and will be seen, by every human generation. In this featured image, however, the stars of the Big Dipper have been digitally enhanced — they do not really appear this much brighter than nearby stars. The image was taken earlier this month from France. The Big Dipper is not by itself a constellation. Although part of the constellation of the Great Bear (Ursa Major), the Big Dipper is an asterism that has been known by different names to different societies. Five of the Big Dipper stars are actually near each other in space and were likely formed at nearly the same time. Relative stellar motions will cause the Big Dipper to slowly change its apparent configuration over the next 100,000 years. Follow APOD on: Facebook, Google Plus, or Twitter
中文翻譯:
🌌 你見到未？這個常見問題，經常在重新發現北空中最為人熟悉的星群——大勺子（Big Dipper）之前出現。這個星星的組合可能是每一代人都曾見過，並將會繼續見到的少數幾樣事物之一。然而，在這張精選圖片中，大勺子的星星經過數位強化——實際上它們並不比附近的星星亮得多。這張圖片是本月早些時候在法國拍攝的。
大勺子本身並不是一個星座。它是大熊座（Ursa Major）的一部分，是一個在不同社會中有著不同名稱的星群（asterism）。大勺子的五顆星星實際上是空間中彼此靠近的，並且可能在幾乎相同的時間內形成。相對的星際運動將使大勺子的外觀在未來的十萬年裡慢慢改變。
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#大勺子 #星空 #星座 #大熊座 #宇宙 #天文 #觀星 #星星 #法國 #精選圖片 #兒童探索
來源:NASA每日圖片
