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Stack #3274177

هى أجسام كبيرة الحجم مضيئة متوهجة تشع ضوءاُ وحرارة النجوم
هى أجسام اصغر حجما ً من النجوم معتمة لا تشع ضوء ً ولا حرارة بل تستمد ضوءها وحرارتها من النجوم . الكواكب
أجسام أصغر حجما ً من الكواكب ، معتمة لا تشع ضوء ً ولا حرارة . تدور حول الكواكب وترتبط بها بفعل الجاذبية الأقمار
هى تجمعات كبيرة من النجوم المختلفة الأحجام والأشكال والأنواع التى يفصل بينها مسافات كبيرة المجرات
هى مجموعة هائلة من أجسام غازية تظهر فى السماء على شكل سحابة من الغبار السُدم
أجسام صلبة كبيرة الحجم عند احتكاكها بالغلاف الجوى للأرض ترتفع درجة حرارتها وتحترق جزئيا النيازك
 أجسام صلبة صغيرة الحجم عند احتكاكها بالغلاف الجوى للأرض ترتفع درجة حرارتها وتحترق كليا الشهب
Created by: hatem osman



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