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جبار أحمر RED SUPER GIANT

1 دقيقة

مرحلة من حياة النجم تأتي بعد المرحلة الأساسية بعد أن يستنفذ نجم كبير الحجم أغلب الهيدروجين لديه وترتفع نسبة الحديد في نواته. يزيد حجم النجم وتقل درجة حرارة سطحه مما يجعل لونه يميل إلى لأحمر. أشهر هذه النجوم هو Betelgeuse أو كتف الجبار ويمكننا رؤيته في سماء صافية ليلاً.

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