???????????????????

????:????????????:??????

???“??”???????,?????????????????(NASA)?????12??17??,?????????3????????????????,NASA???,???????????????????2???????????????????????????????????(SpaceX)?“??????”??

????,NASA??????????2??,????????,????SpaceX??????,????????????????????3???

?????????,??????,NASA??SpaceX????????,?????

????,???????6?????????6???????????,?????????????????????“???”???,?????????????????6?14??????????,??????????????????,?????8???,NASA?,?“????”?2???????(SpaceX)??“????????????”??????????????????(??? ???????????)

???:???????