a museum in ohio is full of artifacts from the space program, everythingm ro fmoon rocks to the jemini space craft. >>> perdue university has its own exhibit about the lunar landing. it includes mementos and personal papers from armstrong. they even have a space suit. >>> one year from now, the space shuttle is slated to retire. and the next manned rocket is at least five years away that's if the engineers can fix a host of problems. so what is the future of nasa and can we afford it? >> reporter: eugene sernan was the last man on the moon. >> i thought we'd be back to the moon by the end of that decade and on our way to mars. >> reporter: buzz aldrin was the sec guy on the moon 40 years ago. in his sights, a permanent and growing colony on mars. >> the pilgrims on the mayflower did not come over and hang around plymouth rock looking for the way back home again. >> that's how they went to the vicinity of the moon. >> reporter: this is the apollo 11 command module that brought the astronauts safely home to earth. but the next generation rocket already has serious cost overruns. and they