HomeAstronomyFinal James Webb Space Telescope instrument reaches super-cold operating temperature

Final James Webb Space Telescope instrument reaches super-cold operating temperature

The James Webb Space Telescope notched a cool milestone — literally — during its months-long calibration for deep-space observations.

The final instrument aboard the $10 billion James Webb Space Telescope finally achieved its operating temperature of just above absolute zero. The successful cooling ensures that the observatory will be able to probe cosmic objects in infrared light, according to a Wednesday (April 13) statement from NASA’s Jet Propulsion Laboratory (JPL) in California, which leads U.S. work on the instrument, called the Mid-Infrared Instrument (MIRI).

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