Exploringspaceisadreamsharedbymanypeople,butfewhaveever...
问题详情：Exploringspaceisadreamsharedbymanypeople,butfewhaveeverexperiencedthethrillofspaceadventure.Afewyearsago,thatfieldwasopenonlytothosewhoworkedforNASAorthespaceprogramsofothernations.Butnowpriva...