Why does it take so long for spacecraft to become fully operational nowadays?

JakeWIlls92

Gold Member
Apr 6, 2014
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This video is from 2014!



And it took until 2020 to make it's first crewed flight!

Why does it take so long to develop spacecraft nowadays?
 
I remember someone on some documentary explaining that rocket parts have to be machined and polished to such a degree that they will work without lubrication across hundreds of degrees of temperature variation. It seems grease does not not work in the vacuum of space. That has to take a long time.
 
It's not about time ... it's about ...

zfoq6.jpg
 

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