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2012 in spaceflight : ウィキペディア英語版 | 2012 in spaceflight
The year 2012 saw a number of significant events in spaceflight. In May and October, the first Commercial Orbital Transportation Services resupply missions took place, during which the SpaceX Dragon became the first private spacecraft to dock with the International Space Station (ISS). In June, China launched the manned Shenzhou 9 orbital mission, and North Korea achieved its first successful orbital launch in December. 2012 also saw China's first successful asteroid exploration mission, and the landing of NASA's ''Curiosity'' rover on Mars. The Vega and Unha-3 rockets made their maiden flights in 2012, while the Proton-K made its last. A total of 78 orbital launches were attempted in 2012, of which 72 were successful, two were partially successful and four were failures. Five manned orbital missions were conducted over the course of the year, all successfully, carrying a total of 15 individuals into orbit. The year also saw five EVAs by ISS astronauts. The majority of the year's orbital launches were conducted by Russia, China and the United States, with 29, 19 and 13 launches respectively. A total of 139 payloads were launched during the year, including communication and navigation satellites, logistics spacecraft and scientific probes. Additionally, a large number of suborbital sounding rockets and ballistic missiles were launched by scientific and military organisations. ==Overview of orbital spaceflight== A total of 78 orbital launches were attempted in 2012, with 72 being reported as successful, and a total of 139 payloads launched. The three most prolific spacefaring nations were Russia, with 29 launches and 27 successes; China, with 19 launches, all of which succeeded; and the United States, with 13 launches, of which 12 succeeded and one was a partial failure.〔 European nations conducted eight orbital launches, all successfully, while India and Japan conducted two each, also successfully. Iran and North Korea both achieved one successful orbital launch during 2012, but Iran also suffered two launch failures, while North Korea suffered one.〔〔〔
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