阿波罗8号是在阿波罗计划中第一艘完成绕月飞行的飞船。早在1968年初,NASA就已经知道登月舱不能按时制造完毕,于是临时决定只发射阿波罗8号的指令与服务舱进入月球轨道进行试验飞行,并确定发射时间为阿波罗7号成功飞行之后的1968年12月。 这次飞行任务原来由麦克迪维特机组承担,后来转由博尔曼机组 Apollo 8 is the first spacecraft in the Apollo program to fly around the moon. As early as early 1968, NASA already knew that the lunar module could not be completed on time, so it decided to launch only the Apollo 8 Command and Service Module into the lunar orbit for a pilot flight and to determine the launch date after Apollo 7’s successful flight December 1968. The mission was originally undertaken by McDerver and later transferred to Borjer