Rather, as in the case of the Apollo spaceships, these ideas have typically been hidden behind the scenes, and have been the handiwork of researchers focused on precise engineering challenges.
Kunalokho, njengalokhu kwenzeka ku-spacecraft ye-Apollo, le mibono iye yafihlwa ngemuva kwezigcawu futhi yaba umsebenzi wabacwaningi igxile ezinselele ezithile zobunjiniyela.