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هل حملت المذنبات بذور الحياة إلى الأرض؟ دراسات حديثة تشكك

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

هل حملت المذنبات بذور الحياة إلى الأرض؟ دراسات حديثة تشكك

ما يعرفه ريفو عن الخبر

تشكك دراسة حديثة في دور المذنبات كحامل أساسي للمواد العضوية اللازمة لنشوء الحياة على كوكب الأرض.
أظهرت المحاكاة الحاسوبية أن سرعات اصطدام المذنبات العالية قد تدمر حمولتها الكيميائية قبل وصولها لسطح الأرض.
أظهرت النتائج أن المريخ كان أكثر حظا من الأرض في استقبال المركبات العضوية بسبب صغر حجمه وضعف جاذبيته.
يقترح الباحثون الكويكبات أو التفاعلات الكيميائية المحلية كبدائل محتملة لمصدر المواد الأولية للحياة على الأرض.

اعتقد العلماء طويلا أن المذنبات ساعدت على ظهور الحياة فوق الأرض، لكن 100 ألف محاكاة حاسوبية تكشف مفارقة مذهلة، وهي اصطداماتها العنيفة ربما دمرت المواد التي جاءت بها من الفضاء.

المصدر: الجزيرة – رياضة

#أصل الحياة والمذنبات #الأرض #المذنبات

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