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US dollar56.09EGPEuro62.50EGPBritish pound74.69EGPSaudi riyal14.96EGPUAE dirham15.27EGPKuwaiti dinar180.57EGPJordanian dinar79.12EGPQatari riyal15.41EGPTurkish lira1.13EGPChinese yuan8.40EGPGold 247,294.76EGP/gGold 216,382.91EGP/gGold 185,471.07EGP/gSilver97.06EGP/g

Science & Tech

هل صنعت الأرض مياهها بنفسها؟ تجربة تعيد فتح لغز المحيطات

By الجزيرة - اقتصاد · 3 hours ago · 1 min read الجزيرة - اقتصاد ↗

هل صنعت الأرض مياهها بنفسها؟ تجربة تعيد فتح لغز المحيطات

هل جاءت مياه الأرض من المذنبات والكويكبات، أم ولدت مع الكوكب نفسه؟ تجربة جديدة تكشف كيف يمكن للصخور والهيدروجين إنتاج الماء في ظروف تشبه الأرض قبل 4.5 مليار سنة.

المصدر: الجزيرة – اقتصاد

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