I don’t know what these are (I’m not a rocket scientist) but they are part of the 3rd stage engine on the Saturn V at Johnson Space Center. Looking at those engines gives me a great appreciation for the art of engineering. Not only are they amazing machines (you wouldn’t believe the pressures and stresses that are present in a rocket engine) but they are also covered in beautiful little details – perfectly routed plumbing, geometric cooling fin patterns, tidy cable harnesses and shiny spheres. All cool stuff even if I have no idea what it’s doing.
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