The latest update on the James Webb Space Telescope literally sent a shiver down my spine! The telescope’s Mid-Infrared Instrument (MIRI) has now reached its operating temperature of a chilly 7 kelvins (7 deg above absolute 0, or -266 degrees C,-447 degrees F). MIRI has now been turned on and is undergoing initial checkouts. This … Continue reading "Brrr. Webb’s MIRI has Reached 6.4 Kelvin, Just a few Degrees Above Absolute Zero"