Spitzer Space Telescope

This illustration shows NASA's Spitzer Space Telescope in shades of blue. The main body of the observatory is cylindrical with an open top and a large piece containing the observatory's solar array on a panel on the telescope's back.
December 20, 2022
Historical DateDecember 20, 2022
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An illustration of NASAs Spitzer Space Telescope. The colors depicted in this illustration are for artistic purposes only.

Spitzer, the fourth and final mission launched as part of NASA's Great Observatories Program, studied the universe in infrared light. Its discoveries were enabled by studying a wide range of cosmic targets, including some of the most distant galaxies ever observed, hidden stellar nurseries in our home galaxy, and planets around other stars.

Launched: August 25, 2003
Decommissioned: January 30, 2020