There is a problem with Webb's MIRI Instrument. The MidInfrared Instrument (MIRI) aboard the James Webb Space Telescope appears to have had an anomaly where one of its Dichroic/Grating wheels reported excessive friction.

00:00 Introduction
01:01 Severity of the Anomaly
02:24 How MIRI Works
03:50 The part on MIRI that is stuck
05:44 Thank you Patrons (and Leo interrupts)

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References:
https://blogs.nasa.gov/webb/

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