As for cooling, only MIRI has an additional cryocooler because it operates at 7K. Everything else is passively cooled by being in the shade. More info: https://jwst.nasa.gov/cryocooler.html 4/4
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As for cooling, only MIRI has an additional cryocooler because it operates at 7K. Everything else is passively cooled by being in the shade. More info: https://jwst.nasa.gov/cryocooler.html 4/4
