????:1???????:???????

2?????????

3???????????????

4????????

5?????????

???6????????????5????????????? ?5????????,???“?”?????????,??

????????(NASA)??????????,“?????????????????????”????5?????????10????52??“???????????5”???????????,???????????????15?,????

“?”??????????25????,6?????????????????????12????15????????,???????????“?”???????????????

5?6??,“?”?????????“???5”????,??6?????????????1??,“?????????”??????3?50???,??

?2011??????????????,????????????(SpaceX)2014?????NASA?????????????,???????????“????????”????“????”????????,NASA?????

???????,?????????????2017????????????????,???????,“?”?;??“????”????,??????10??????????(?????????????????) ????????:??