It is important to remember that the sunshade teared during a test: https://www.inverse.com/article/42894-sunshield-rips-keep-james-webb-telescope-grounded http

It is important to remember that the sunshade teared during a test: https://www.inverse.com/article/42894-sunshield-rips-keep-james-webb-telescope-grounded https://www.inverse.com/article/42894-sunshield-rips-keep-ja... and a small detail like that, fibers from the sunshade, affected another space telescope mission, ESA's GAIA: https://en.wikipedia.org/wiki/Gaia_(spacecraft)#Stray_light_problem https://en.wikipedia.org/wiki/Gaia_(spacecraft)#Stray_light_... Putting this instrument operational at the right place is probably an unprecedented mission in terms of automated complexity.