http://www.space.com/34593-james-webb-space-telescope-complete-2018-launch.html The largest space telescope ever built is... well, built. It's done. Everything is in place. There's going to be some final assembly work on the spacecraft later-on, but the telescope itself is complete and working! It's now going to be put through rigorous testing (they want to avoid the problems they had with Hubble) before being prepared for its 2018 launch abord an Ariane 5 ECA. It was twenty years in t