水手10号：第一个使用星际重力辅助的任务
This artists’ impression is of the Mariner 10 mission. Mariner 10, which launched on Nov. 3, 1972, was the first mission to perform an interplanetary gravity assist, using a flyby of the planet Venus to alter its path to meet Mercury. This allowed the spacecraft to meet Mercury on three occasions in 1974 and 1975. 这幅艺术家画的是水手10号的任务。水手10号于1972年11月3日发射升空，...