spacewalk , 23 minutes , 1965 . 太空漫步 ， 23分鐘 ， 1965年。

Amazing footage of Nasa's first ever spacewalk from Gemini IV 178 miles above the Earth | Mail Online http://www.dailymail.co.uk/sciencetech/article-2126038/Amazing-footage-Nasas-spacewalk-Gemini-IV-178-miles-Earth.html