طلاب الثانوية دور ثان يبدأون امتحان الجيولوجيا وعلم النفس والتفاضل - اليوم السابع



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Mysterious 'interstellar tunnel' found in our solar neighborhood - Interesting Engineering
Scientists Have Figured Out Why Mysterious Craters Are Popping Up Around Siberia - ExtremeTech

Millennium Space delivers two spacecraft for upcoming NASA mission - SpaceNews
New research challenges dark matter theory in galaxy formation - Phys.org