The Spitzer Space Telescope (formerly the Space Infrared Telescope Facility or SIRTF) is an
infrared space observatory, the fourth and final of
NASA's Great Observatories.The time frame of the mission will be a minimum of 2.5 years, with 5 or more optimal. In keeping with
NASA tradition, the telescope was renamed after successful demonstration of operation, on
December 18,
2003. Unlike most
telescopes which are named after famous deceased astronomers by a board of scientists, the name for SIRTF was obtained from a contest open to the general public (to the delight of
science educators).
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