وفر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.

اشترك الآن

تمت عملية الاشتراك بنجاح

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عذراً، عذرا،أنت مشترك مسبقاً بالنشرة البريدية

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عذراً، هناك مشكلة في البريد الالكتروني

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content_cookies: int(0)
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get_post_type: string(7) "concept"

فضاء وفلك

سحابة أورت |  Oort Cloud

18 يوليو 2019


هي قشرة كبيرة مثل الفقاعة تحيط بالمجموعة الشمسية تحتوي على مليارات من الأجسام الثلجية ويأتي منها أغلب المذنبات. يعتقد العلماء أنها تمتد من 2,000 وحدة فلكية إلى 10,000 أو حتى 100,000 وحدة فلكية من الشمس.