Problem Detected on the James Webb Space Telescope – MIRI Anomaly

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Mid-Infrared Instrument Operations Update The James Webb Space Telescope’s Mid-Infrared Instrument (MIRI) has four observing modes. During setup for a science observation on August 24, a mechanism that supports one of these modes, known as medium-resolution spectroscopy (MRS), exhibited what appears to be increased friction. This mechanism is a grating wheel that allows astronomers to select...

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