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截止1980年底,苏美共发射了35次不载人行星探测器(其中不包括向月球发射的探测器和载人飞船),获得了大量科学数据,为人类研究行星和宇宙做出了重大贡献。下表是美苏到1978年为止发射的各种行星探测器探测太阳系八大行星的时间表。
As of the end of 1980, the Soviet Union and the United States launched 35 unmanned planetary probes (excluding the probes and manned spacecraft launched to the moon), obtained a large amount of scientific data and made significant contributions to the human study of the planet and the universe . The table below shows the timelines of various planetary probes launched by the United States and the Soviet Union in 1978 to detect the eight major planets in the solar system.