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1972 in science : ウィキペディア英語版 | 1972 in science
The year 1972 in science and technology involved some significant events, listed below. ==Astronomy and space exploration==
* January 5 – President of the United States Richard Nixon orders the development of a space shuttle program. * February 4 – Mariner 9 sends pictures from Mars. * February 21 – The Soviet unmanned spacecraft Luna 20 lands on the Moon. * March 2 – Launch of Pioneer 10 spacecraft. * April 16 – Apollo 16 launched. * June 30 – The International Time Bureau adds the first leap second to Coordinated Universal Time (UTC). * July 23 – The United States launches Landsat 1, the first Earth-resources satellite. * December 7 – Apollo 17 launched and 'The Blue Marble' photograph of the Earth taken.
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