?? “???????????”?“????”????????
????:1????????:??????
2???????
3???95??????
4??????
5?92????????
???????6???????22??? ??,?????????????21????,??(NASA)???????????????????????????,?????????“?”?????????????,????,?????????
?????,????????????????,??????????????????????????????
??????:????NASA?????????????,“??????????,??????????????,??,??????”
?????????????????,???????????????????“????”???6????5????????????????????,6?,????6???????????14???????,?????“????????????????”?6?26????????
?????????????:????