NASA ScienceCasts: 解开宇宙起源之谜

单击此处查看更多视频:https://alugha.com/NASA AMS-02正在帮助科学家从其在空间站上的位置研究许多基本物理问题。 宇航员正在进行一系列太空行走,以进行维修并延长天文台的寿命。 空间站研究:www.nasa.gov/iss-science NASA Science: http://science.nasa.gov/

LicenseCreative Commons Attribution-ShareAlike

More videos by this producer

ScienceCasts: Escape of the Destructive Electrons

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

NASA ScienceCasts: A Sunset Sky Show

Click here to see more videos: https://alugha.com/NASA Visit http://science.nasa.gov/ for more. On the evening of March 18 (2018), step outside for a view of the crescent Moon, Venus, and Mercury together above the twilight horizon.

Measuring Distance in the Solar System | NASA Planetary Sciences

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