Timeline: 50 Years of Spaceflight
On Oct. 4, 2007, the Space Age celebrated the 50th anniversary of the historic launch of Sputnik, the first artificial satellite, by the former …
William Weng flipped this story into 收藏•4218d
On Oct. 4, 2007, the Space Age celebrated the 50th anniversary of the historic launch of Sputnik, the first artificial satellite, by the former …
William Weng flipped this story into 收藏•4218d