تم تعطيل الجافا سكربت. للحصول على تجربة أفضل، الرجاء تمكين الجافا سكربت في المتصفح الخاص بك قبل المتابعة.

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الرسالة: [QUOTE="سرجيوُس, post: 3438384, member: 106640"] [FONT=Arial][SIZE=5]The sun is one of hundreds of billion of stars in our galaxy, the Milky Way. The galaxy is composed of gaseous interstellar medium, neutral or ionized, sometimes concentrated into dense gas clouds made up of atoms molecules, and dust. All of the matter -- gas, dust, and stars -- rotate around a central axis perpendicular to the galactic plane. The centrifugal force caused by the rotation balances out the gravitational force, which draw all the matter toward the center. [URL]http://hypertextbook.com/facts/2002/StacyLeong.shtml[/URL] تدور حول محور عمودي __________________________[/SIZE][/FONT] [/QUOTE]