NASA ScienceCasts: أنت تضيء ليلنا

يمكن للجميع حول العالم المشاركة في دراسة المذنب 46P/ورتينن حيث سيقترب من الأرض في ديسمبر من 2018. يمكنك زيارة لمزيد من المعلومات. الترجمة والدبلجة: alugha انقر هنا لمشاهدة مزيدٍ من الفيديوهات:

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