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美国航宇局1973年4月5日发射的“先驱者-11号”空间探测器,曾在1974年12月3日飞临木星进行探测,获得重要成果。从那以后,开始了奔向土星的航行,于今年9月1日在距离土星可见云顶二万一千公里处飞过,成了人类的第一个最接近土星并进行科学考查的空间探测器。从它在地面起飞直至到达土星,历时约七十七个月,行程三十二亿多公里。在它对土星的探测过程中,拍摄了许多极有价值的照片,测得了大量重要科学数据。美国的有关科学家
NASA launched the Pioneer-11 space probe on April 5, 1973, and flew to Jupiter for exploration on December 3, 1974, and achieved important results. Since then, the voyage to Saturn has started, flying on the Sept. 1, at a distance of 21,000 km from the top of Saturn, became the first space probe for humankind closest to Saturn and conducting scientific tests . It took off from the ground until it reached Saturn, which lasted for about 77 months and traveled more than 3.2 billion kilometers. During its exploration of Saturn, many valuable photographs were taken and a large number of important scientific data were measured. American scientist