This website from the Jet Propulsion Lab provides over 100 images of NASA's spacecraft and telescopes. The original caption that was released with the image is posted along with the date of the image. The images can be sorted by mission, image release date, name, mission, instrument, or image size and can be downloaded in TIFF or JPEG format. At the time of this report, the sorting function was a bit erratic, but visitors can also refine their search using drop-down menus and a search function.
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