太陽到底有多大？看了圖片就知道

太陽到底有多大？看了圖片就知道
太陽是太陽系的中心天體,是太陽系裡唯一的一顆恆星,也是離地球最近的一顆恆星。太陽位於銀河系的對稱平面附近，距離銀河系的中心約33000光年，在銀道面以北約26光年,它一方面繞著銀心以每秒250公里的速度旋轉，另一方面又相對於周圍恆星以每秒19.7公里的速度朝著織女星附近方向運動。

太陽的直徑為139.2萬千米，是地球的109倍；太陽的體積為141億億立方千米，是地球的130萬倍；太陽的質量約為2000億億億噸，是地球的33萬倍。它集中了太陽系99.865%的質量，是個絕對至高無上的「國王」。然而，在宇宙中，它還只是一顆質量中等的普通恆星。

太陽是一個熾熱的氣體星球，沒有固體的星體或核心。太陽從中心到邊緣可分為核反應區、輻射區、對流區和大氣層。其能量的99%是由中心的核反應區的熱核反應產生的。太陽中心的密度和溫度極高。太陽大氣的主要成分是氫（質量約佔71%）與氦（質量約佔27%）。太陽的大氣層從內到外可分為光球、色球和日冕三層。
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資料轉貼:[url=http://hk-leo.net/unusual/mystery_59_01.htm]世界搜奇網[/url]
如登過,抱歉

第一位呀^^多謝

哇 超震撼 謝謝

太陽大得很唷.........

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回復 #1 carpenterhk 的帖子

thanks...................

哇....very bigbigbig

thank you !!!

不錯的資訊喔~支持 頂了
thank you so much ! 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