The door to @NASA_Johnson's massive Chamber A is shut; our ~100 day cryogenic test of #Webb commences! Read more: http://go.nasa.gov/2ufyztO pic.twitter.com/dKwSzCjIUD
But will it remain closed for 100 days? Or will you open it from time to time?
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Article says it takes a month just to get it down to the correct temperature, so I assume it will stay closed the entire time.
- End of conversation
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