The James Webb Space Telescope experienced a fault with another instrument

Every spacecraft messes up occasionally, and even the most powerful space telescope ever launched isn’t immune.

The James Webb Space Telescope (JWST or Webb) was launched in December 2021 and has been making science observations since July 2022, astonishing the world with its gorgeous images and revolutionary data. But on January 15, the JWST’s Near Infrared Imager and Slitless Spectrograph (NIRISS) instrument “experienced a communications delay within the instrument that caused its flight software to time out,” according to a January 24 statement (opens in new tab) from NASA. NIRISS cannot currently be used for science, the statement noted.



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