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تكنوضاد فضاء

مستعر أعظم | SUPERNOVA

بعد أن يتحول النجم العملاق لجبارٍ أحمر ويكبر حجمه، تنفجر الطبقة الخارجية للنجم في انفجارٍ ضخم يُطلَق عليه المستعر الأعظم، ويُطلِق هذا الانفجار الكثير من العناصر الثقيلة إلى الفضاء. وفي حالة المجموعة الشمسية فكل العناصر الثقيلة مثل الحديد والذهب وغيرهم جاؤوا من انفجار المستعرات العظمى على بُعد آلاف السنين الضوئية.

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