If you want some extra context for the awesomeness that's happening here (especially around the power of reusable components), try watching When We Left Earth:

If you want some extra context for the awesomeness that's happening here (especially around the power of reusable components), try watching When We Left Earth: https://en.wikipedia.org/wiki/When_We_Left_Earth:_The_NASA_Missions https://en.wikipedia.org/wiki/When_We_Left_Earth:_The_NASA_M... It runs through the making of Gemini, Apollo, Shuttle, Hubble, and the ISS.