This website, maintained by the California Institute of Technology, describes the two-and-a half-year mission of the Spitzer Space Telescope to "obtain images and spectra by detecting infrared energy, or hear, radiated by objects in space between wavelengths of three and 180 microns." Scientists can find images and explanations of the instrumentation, data and analysis, and an overview of the project at the Astronomers' Site. At the Cool Cosmos link, educators and students can find fun classroom activities, a cosmic reference guide, and astronomy tutorials. Everyone can discover the latest news and images collected by Spitzer. The materials for the general public are also offered in Spanish.