A look back at JWST’s predecessor: NASA’s Spitzer | by Ethan Siegel | Starts With A Bang! | Mar, 2023

This artist’s conception of the Spitzer Space Telescope illustrates not only the infrared space telescope’s mirror, tube, and equipment, but a visualization of infrared gas and dust that can only be revealed from a space-based infrared observatory. (Credits: NASA/JPL-Caltech)

On January 30, 2020, NASA’s Spitzer Space Telescope was retired after 17 years.

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