Could the real reason astronauts haven’t returned to the moon be because NASA has simply forgotten how?
According to this rumor, propagated by writers including Terry Bisson and astronomer John Lewis in his book “Mining the Sky” in 1996, NASA simply lost its blueprints to the Saturn V rockets. NASA was quick to point out that microfilm of the blueprints is still in storage at Marshall Space Center.
So why can’t NASA rebuild the Saturn rockets? As explained in 2009 by NASA Lunar Science Institute director David Morrison, many of the companies that manufacture the parts that made up the Saturn V have since gone out of business and the parts are no longer available. Besides, rocket technology has advanced somewhat since the Apollo era.