متابعة / عُمر حجازي

يضع علماء إدارة الطيران والفضاء الأمريكية (ناسا) اللمسات الأخيرة على سفينة فضاء مُعدة للذهاب لـ كويكب بينو في 2018 للعثور على أدلة بشأن أصل الحياة.
حيث تفصلنا أيام عن استكمال عملنا والشروع في وضع مركبة الفضاء هذه على الصاروخ أطلس 5 وبدء الرحلة إلى بينو ثم العودة.”

ومن المقرر أن تبدأ المهمة التي تتكلف مليار دولار وتعرف باسم (أوزيريس-ريكس) في الثامن من سبتمبر أيلول 2016 من قاعدة كيب كنافيرال الجوية في فلوريدا.

ومن المنتظر أن تصل المركبة الآلية التي تعمل بالطاقة الشمسية والتي بنتها لوكهيد مارتن إلى الكويكب 1999 آر.كيو 36 الملقب ببينو خلال عامين من أجل القيام برسم الخرائط وإجراء عمليات المسح على أن تستخدم بعد ذلك ذراعا آلية لجمع العينات من أجل العودة في 2023.

فـ هناك ضرورة للذهاب لـ الكويكب وذلك لما يحيتوية من المعادن والمواد الكيماوية. ويعتقد أن كويكبات مماثلة اصطدمت بالأرض ،وأنها وفرت المواد العضوية والمياه اللازمة لتشكل الحياة.

وحقيقة هذا يمثل تحديا أكبر كثيرا مما توقعنا في الأساس لأن قوى أخرى مثل ضغط الإشعاع الشمسي وحتى الانبعاثات الحرارية قبالة الكويكب نفسه ستدفع المركبة بعيدا.”

كما أن البعثة ستمنح رواد الفضاء رؤى جديدة بشأن كيفية تأثير حرارة الشمس على حركة الصخور الفضائية وهي بيانات حاسمة في حماية الأرض من التصادم مع الكويكبات في المستقبل

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