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The following other wikis use this file: Usage on hr.wikipedia.org Apollo 11; Usage on id.wikipedia.org Apollo 11; Usage on ja.wikipedia.org アポロ11号; Usage on no.wikipedia.org Apollo 11; Usage on sh.wikipedia.org Apollo 11; Usage on test.wikipedia.org Apollo 11; Usage on zh.wikipedia.org 阿波罗11号
After the Apollo 11 mission, officials from the Soviet Union said landing humans on the Moon was dangerous and unnecessary. At the time the Soviet Union was attempting to retrieve lunar samples robotically. The Soviets publicly denied there was a race to the Moon, and indicated they were not making an attempt. [234]
Sketch of a circumlunar free return trajectory (not to scale), plotted on the rotating reference frame rotating with the moon. (Moon's motion only shown for clarity) In orbital mechanics, a free-return trajectory is a trajectory of a spacecraft traveling away from a primary body (for example, the Earth) where gravity due to a secondary body (for example, the Moon) causes the spacecraft to ...
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