I'm kind of confused on this point SLS has engines, a tank, side rocket boosters, a capsule, and seemingly all of the pieces. What is the major technical issue right now that is keeping SLS from launching?

  • $\begingroup$ Projects like this go through repeated cycles of test and review every time two subcomponents are joined. $\endgroup$ – AShelly Mar 27 '19 at 18:30
  • $\begingroup$ Launching to.... where? $\endgroup$ – Magic Octopus Urn Mar 27 '19 at 19:04
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    $\begingroup$ @MagicOctopusUrn The EM-1 mission, presumably. $\endgroup$ – Russell Borogove Mar 27 '19 at 19:31
  • $\begingroup$ @RussellBorogove thank you, I probably should've worded that without the ellipses, it was a literal question. $\endgroup$ – Magic Octopus Urn Mar 27 '19 at 19:45
  • $\begingroup$ there's a premise here that a "major technical issue" exists. That a government contractor is slow to deliver doesn't mean that the issue is necessarily technical in nature. $\endgroup$ – uhoh Mar 27 '19 at 23:05

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