10 Things Everyone Hates About Youtube 再生回数
http://josuekgrf079.almoheet-travel.com/how-successful-people-make-the-most-of-their-youtube-zai-sheng-hui-shu-maiu
By doing this you may become a professor, who teaches the wonders of astronomy, or potentially even receive a position at NASA. That would be amazing! Visualize telling people you realize that you work for NASA.