@scottparnapy @NASAWebb The Sunshield Will Allow the Telescope to Cool Down to a ... - Latest Tweet by NASA

The sunshield will allow the telescope to cool down to a temperature below 50 Kelvin (-370°F, or -223°C) by passively radiating its heat into space. @NASAWebb’s MIRI instrument uses a cryocooler to reach its significantly lower operating temperatures of -447°F (7 kelvins).— NASA (@NASA) January 8, 2022

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