@TommyTsue Webb Will Start Cooling Down Once It's in Space, and Once It's Cold Enough, ... - Latest Tweet by NASA

Webb will start cooling down once it's in space, and once it's cold enough, we'll need to fine-tune the alignment of the mirrors and calibrate the instruments.

We're expecting to begin routine science observations six months after launch! More info: https://t.co/Vhr1Qdic6k— NASA (@NASA) December 15, 2021

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