ICYMI: #NASAWebb is ready to rumble! 
The fully assembled observatory recently completed environmental testing, which simulated the intense and rocky ride Webb will experience while heading to space. Learn what's next: https://go.nasa.gov/3iIotGq pic.twitter.com/H1ZmnUAHwr
The James Webb Space Telescope Completes its Final Environmental Tests
The fully assembled James Webb Space Telescope has completed its environmental tests, which simulate the conditions the telescope will encounter during launch.
