?? ???????????????????
????:1?????:???????????
2??????
3???????????
4??????????????
5???????
?“???”?????????????????????,??????(NASA)??12?17??????,?????????3??????????????,NASA???????????????????????????????????,????2?????????????????(SpaceX)???“????”?????????
??,NASA?2????,??????????,??????????SpaceX???,??????????3???????
??,???,NASA???SpaceX?????????,??
??????????,???????????6???????6??,?????????????????????????“????????????”?????????????????,????6??????????????????14???,??????,???????????8??,NASA?,????????“?????”?2???????(SpaceX)?????????“???”???(???????????????????? ?????)
?:??????