Spitzer imaging refers to the use of the Spitzer Space Telescope for capturing and studying images of celestial objects in infrared light. The Spitzer Space Telescope was launched by NASA in 2003 and is designed specifically for infrared astronomy, allowing for the observation of cooler objects in space such as dusty debris disks, exoplanets, and distant galaxies. Spitzer imaging has been instrumental in advancing our understanding of the universe by providing detailed, high-resolution images of these objects in a different light spectrum than traditional optical telescopes.