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US dollar52.14EGPEuro59.88EGPBritish pound69.68EGPSaudi riyal13.90EGPUAE dirham14.20EGPKuwaiti dinar169.15EGPJordanian dinar73.54EGPQatari riyal14.32EGPTurkish lira1.07EGPChinese yuan7.76EGPGold 247,299.03EGP/gGold 216,386.65EGP/gGold 185,474.27EGP/gSilver111.31EGP/g

Science & Tech

بعد رصد اصطدام ضخم على القمر.. من يحمي الأرض من كارثة الكويكبات العابرة للفضاء؟

By فرانس 24 · 2 hours ago · 1 min read فرانس 24 ↗

بعد رصد اصطدام ضخم على القمر.. من يحمي الأرض من كارثة الكويكبات العابرة للفضاء؟

أعاد اكتشاف فوهة اصطدام حديثة على سطح القمر، تشكلت خلال عام 2024، تسليط الضوء على الخطر الذي تمثله الأجسام الفضائية للأرض. وبينما يحتفظ القمر بآثار اصطداماته لمليارات السنين، تطمس عوامل التعرية والنشاط الجيولوجي معظم آثار الكويكبات على كوكبنا. من “تشيليابينسك” في روسيا إلى فوهة “تشيكشولوب” في المكسيك التي ارتبطت بانقراض الديناصورات، يكشف تاريخ الاصطدامات الكونية عن قوة هذه الأجرام، وعن أهمية فهمها ورصدها قبل أن تهدد مستقبل الحياة على الأرض.

المصدر: فرانس 24

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