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In 1999 the United Nations designated October 4 through October 10 as World Space Week. The week celebrates the contributions that space science and technology have made to improving life on Earth. October 4 was chosen to commemorate the former U.S.S.R.‘s October 4, 1957, launch of Sputnik, the first manmade satellite in space. October 10 honors the 1967 signing of the U.N. Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space. Discuss
Source: The Free Dictionary