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A human mission to an asteroid is one of the long-term goals of astronautics. The near-Earth asteroids are the target of such a mission, due to their proximity to the Earth. A human mission to an asteroid would be a new step in the history of spaceflight, by sending astronauts the Moon's orbit where a previous robotic mission called Asteroid Redirect Mission would place a retrieved asteroid. President Barack Obama announced 15 April 2010 that the project of a human mission to an asteroid became a new goal for 2025.〔http://www.nasa.gov/news/media/trans/obama_ksc_trans.html〕 This statement was announced after his proposal of cancellation of the Constellation program in February 2010, whose main objective was the return of the man on the moon. Obama added that deep space mission could serve as a springboard for a human mission to Mars in the mid-2030s. NASA is developing the Orion spacecraft and launcher Space Launch System (SLS) that will achieve the task in Exploration Mission 2.〔http://www.nasa.gov/pdf/617409main_orion_overview_fs_33012.pdf〕 ==See also== * Asteroid capture * Asteroid mining * Asteroid Redirect Mission * Colonization of the asteroids * Space exploration technologies 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Human mission to an asteroid」の詳細全文を読む スポンサード リンク
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