The Spitzer Space Infrared Telescope Facility
The Space Infrared Telescope Facility in a NASA JPL artwork
Fourth of NASA's Great Observatories for Space Astrophysics
Spitzer SIRTF Science Spectrum Resources Great Observatories


SIRTF, IRAS and Infrared Astronomy Resources
NASA's Great Observatories for Space Astrophysics are a family of four Earth-orbiting satellites carrying telescopes designed to study the Universe in both visible light and non-visible forms of radiation. The fourth in the series is the Spitzer Space Telescope, previously known as the Space Infrared Telescope Facility (SIRTF). It was the last in the series to be launched when it was lofted to space in 2003.

IRAS
IRAS in Ball Aerospace artwork
The first long life cryogenically cooled infrared telescope in space was IRAS.
Ball Aerospace artwork
Learn more about Spitzer Space Telescope: Learn more about Infrared Astronomical Satellite (IRAS): Learn more about deep space spectrum astronomy: Learn more about NASA's Great Observatories for Space Astrophysics:

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