访问 http://science.nasa.gov/ 了解更多信息。 在 http://epic.gsfc.nasa.gov/ 查找 DSCOVR 的每日图片 深空气候观测站是美国国家海洋与大气管理局（NOAA）共同执行的NASA仪器任务，为地球观测提供一种新型" 互补 "的景观，科学家和人们都为此感到惊奇。 点击这里查看更多视频：https://alugha.com/NASA
LicenseCreative Commons Attribution
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
