تبحث الدراسات التي تجريها ناسا أثر السفر في الفضاء على الجهاز المناعي لجسم الإنسان. يمكنك زيارة http://science.nasa.gov/ للحصول على مزيد من المعلومات. المناعة الوظيفية: https://www.nasa.gov/mission_pages/station/research/news/functional_immune انقر هنا لمشاهدة مزيد من الفيديوهات: https://alugha.com/NASA
Visit http://science.nasa.gov/ for more. Earth is surrounded by electrons that can be disruptive to our technology. NASA is using high-altitude balloons and spacecraft to monitor and understand these particles in the radiation belts surrounding our planet. Click here to see more videos: https://al
Explore how astronomers and scientists use astronomical units to measure distances in the solar system in this video adapted from NASA. The astronomical unit (au) -- equal to the average distance from Earth to the Sun -- is a convenient unit of measure when talking about distances in the solar syste
