The Spitzer survey refers to a series of astronomical surveys conducted using NASA's Spitzer Space Telescope. These surveys aim to study various astronomical phenomena, such as stars, galaxies, and exoplanets, in different wavelengths of infrared light. The Spitzer survey has provided valuable insights into the formation and evolution of celestial objects, as well as the composition of interstellar matter. By observing in the infrared spectrum, the Spitzer survey complements data obtained from telescopes observing in other wavelengths, such as visible light or radio waves.