With much of the initial setup and fine-tuning out of the way, the James Webb Space Telescope’s (JWST) instruments have been cooling down, but one instrument in particular needs a cryocooler in order to really chill out. While the other instruments need to reach about 34 to 39 kelvins in order to be operational, the Mid-Infrared Instrument

Source: Hot Hardware – NASA’s Space Telescope Enters Another Critical Phase And Needs To Literally Chill-Out